Potatoes cost $3.64/lb. How much would 0.47 lb of potatoes cost? ​

Algebraic expression in x is given by option D. ((2x + 1)^2 + 1^2)^1/2.

To rewrite csc(arctan(2x + 1)) as an algebraic expression in x, we can use the trigonometric identities

Let's start by considering a right triangle with an angle a such that 2x + 1 = tan(a). Using this information, we can label the sides of the triangle:

Opposite side = 2x + 1

Adjacent side = 1 (since tan(a) = opposite/adjacent = (2x + 1)/1)

Hypotenuse = √[(2x + 1)^2 + 1^2] (by the Pythagorean theorem)

Now, we can rewrite the expression:

csc(arctan(2x + 1)) = csc(a)

Since csc(a) is the reciprocal of sin(a), we can rewrite it as:

1/sin(a)

Using the right triangle, we can find the value of sin(a) as:

sin(a) = opposite/hypotenuse = (2x + 1)/√[(2x + 1)^2 + 1^2]

Therefore, the expression csc(arctan(2x + 1)) can be rewritten as:

1/[(2x + 1)/√[(2x + 1)^2 + 1^2]]

Simplifying further, we can multiply by the reciprocal of the fraction:

= √[(2x + 1)^2 + 1^2]/(2x + 1)

Hence, the correct option is D. ((2x + 1)^2 + 1^2)^1/2.

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The equation of the line perpendicular to p is given as follows:

y = -x/3 - 1.

The slope-intercept equation for a linear function is presented as follows:

y = mx + b

The coefficients m and b represent the slope and the intercept, respectively, and are explained as follows:

The slope of line p is given as follows:

(2 - (-1))/(2 - 1) = 3.

As the two lines are perpendicular, the slope of line n is obtained as follows:

3m = -1

m = -1/3.

Hence:

y = -x/3 + b.

When x = 3, y = -2, hence the intercept b is obtained as follows:

-2 = -1 + b

b = -1.

Hence the equation is given as follows:

y = -x/3 - 1.

The graph of line p is given by the image presented at the end of the answer.

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The given limit can be expressed as a definite integral on the interval [2, 5] by using the definition of a Riemann sum:

lim Σ [4(xi*)3 − 7xi*]Δx, [2, 5]
n→[infinity] i = 1

This can be rewritten as:

lim Σ [(4(xi*)3 − 7xi*)/2] 2(n/2)Δx, [2, 5]
n→[infinity] i = 1

where Δx = (5 - 2)/n = 3/n and xi* is any point in the ith subinterval [xi-1, xi]. We have also divided n into 2 equal parts to get 2(n/2)Δx.

Now, we can express the above Riemann sum as a definite integral by taking the limit of the sum as n approaches infinity:

lim n→[infinity] Σ [(4(xi*)3 − 7xi*)/2] 2(n/2)Δx

= lim n→[infinity] Σ [(4(xi*)3 − 7xi*)/2] (5-2)/n (n/2)

= lim n→[infinity] Σ [(4(xi*)3 − 7xi*)/2] (3/2)

= ∫2^5 [(4x^3 − 7x)/2] dx

Therefore, the limit can be expressed as the definite integral:

∫2^5 [(4x^3 − 7x)/2] dx.

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After 3 years and 9 months, the amount of money in Jamilia's account, with an initial deposit of $800 and an annual simple interest rate of 2.65%, will be approximately $862.78.

To calculate the final amount, we need to consider both the principal amount and the interest earned over the given time period. The simple interest formula is:

Interest = Principal × Rate × Time

First, let's calculate the interest earned. The principal amount is $800, the rate is 2.65% (or 0.0265 as a decimal), and the time is 3 years and 9 months. Converting the time into years, we have 3 + 9/12 = 3.75 years.

Interest = $800 × 0.0265 × 3.75 = $79.50

Now, to find the total amount in the account, we add the interest to the principal:

Total Amount = Principal + Interest = $800 + $79.50 = $879.50

Therefore, after 3 years and 9 months, Jamilia will have approximately $879.50 in her account.

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In set S, a 4-permutation example is (b, d, e, g), a 4-subset example is {a, c, d, e}, there are 35 subsets with exactly four elements, and there are 70 subsets with either three or four elements.

(a) A 4-permutation from the set S is an ordered arrangement of 4 distinct elements from the set. Example: (b, d, e, g)

(b) A 4-subset from the set S is a selection of 4 distinct elements without considering the order. Example: {a, c, d, e}

(c) To determine the number of subsets of S with exactly four elements, you can use the combination formula: C(n, k) = n! / (k!(n-k)!), where n is the total number of elements in the set (7 in this case) and k is the number of elements you want to select (4 in this case).

So, C(7, 4) = 7! / (4!3!) = 35 subsets with exactly four elements.

(d) To find the number of subsets of S with either three or four elements, calculate the number of subsets for each case separately, and then add them together.

For 3-element subsets, use C(7, 3) = 7! / (3!4!) = 35 subsets.

Then, add the results from (c) and this step: 35 (4-element subsets) + 35 (3-element subsets) = 70 subsets with either three or four elements.

Your answer: In set S, a 4-permutation example is (b, d, e, g), a 4-subset example is {a, c, d, e}, there are 35 subsets with exactly four elements, and there are 70 subsets with either three or four elements.

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The determinant is non-zero (-30 ≠ 0), the matrix is invertible.

To find the determinant of the matrix, we can use the Laplace expansion along the first row:

| 5 -2 3 |

| 1 6 6 |

| 0 -10 -9 |

= 5 * | 6 6 | - (-2) * | 1 6 | + 3 * | 1 6 |

| -10 -9 | | 0 -9 | | 0 -10 |

= 5[(6*(-9)) - (6*(-10))] - (-2)[(1*(-9)) - (60)] + 3[(1(-10)) - (6*0)]

= -30

Since the determinant is non-zero (-30 ≠ 0), the matrix is invertible.

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The determinant of the given matrix is 132.

To find the determinant of the matrix, we can use the formula for a 3x3 matrix:

| a b c |

| d e f |

| g h i |

Determinant = a(ei - fh) - b(di - fg) + c(dh - eg)

In this case, the matrix is:

| 5 -2 3 |

| 1 6 6 |

| 0 -10 -9 |

Using the formula, we can calculate the determinant as follows:

Determinant = 5(6(-9) - (-10)(6)) - (-2)(1(-9) - (-10)(6)) + 3(1(-10) - 6(0))

Simplifying the expression, we get:

Determinant = 5(-54 + 60) - (-2)(-9 + 60) + 3(-10 - 0)

= 5(6) - (-2)(51) + 3(-10)

= 30 + 102 + (-30)

= 132

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The equation of the line that passes through (-4,1) and is perpendicular to the line y= -1/2x + 3​.

We are given that;

Point= (-4,1)

Equation y= -1/2x + 3​

Now,

To find the y-intercept, we can use the point-slope form of a line: y - y1 = m(x - x1), where m is the slope and (x1,y1) is a point on the line. Substituting the values we have, we get:

y - 1 = 2(x - (-4))

Simplifying and rearranging, we get:

y = 2x + 9

Therefore, by the given slope the answer will be y= -1/2x + 3​.

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The table is attached in the solution.

Given that Maria selling the yogurts and the sandwiches at $3 and $6 respectively,

We need to make a table if she sells 0, 1, 2, 3, 4, 5, or 6 frozen yogurts same for the sandwiches,

Yogurt =

Since one yogurt cost $3 therefore we will multiply the number of yogurts to the unit rate to find the cost of the number of packets given,

Similarly,

Sandwich =

one sandwich cost $6 therefore we will multiply the number of sandwiches to the unit rate to find the cost of the number of packets given,

The table is attached.

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Statistically significant linear relationship between the independent variables (study hours and GPA) and the dependent variable (ACT score), and the multiple regression equation can be used to predict the ACT score based on the hours studied and the student's GPA.

In this scenario, the dependent variable is the ACT score, while the independent variables are the number of hours spent studying (x1) and the student's GPA (x2).

To find the p-value for the regression equation, we can use a statistical software or calculator to perform a multiple linear regression analysis. The p-value represents the probability that the observed relationship between the independent and dependent variables is due to chance.

Assuming that we have performed the analysis and obtained the results, we can say that the p-value is less than 0.01 (since the level of significance is set at 0.01). This suggests that there is a statistically significant linear relationship between the independent variables (study hours and GPA) and the dependent variable (ACT score).

To identify the multiple regression equation that best fits the data, we can look at the coefficients for each independent variable. These coefficients represent the change in the dependent variable (ACT score) for every one unit increase in the independent variable, holding all other variables constant.

Based on the given data, we can write the multiple regression equation as:

ACT score = b0 + b1(hours studied) + b2(GPA)

where b0 is the intercept, b1 is the coefficient for hours studied, and b2 is the coefficient for GPA.

Using the regression analysis results, we can plug in the values of the coefficients to obtain the specific equation that fits the data.

Overall, we can conclude that there is a statistically significant linear relationship between the independent variables (study hours and GPA) and the dependent variable (ACT score), and the multiple regression equation can be used to predict the ACT score based on the hours studied and the student's GPA.

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The standard deviation of the uniformly distributed random variable x is approximately 2.8868.

To compute the standard deviation of a uniformly distributed random variable, we can use the formula:

Standard Deviation = (b - a) / sqrt(12)

where 'a' and 'b' are the lower and upper bounds of the uniform distribution, respectively.

In this case, the lower bound (a) is 5 and the upper bound (b) is 15. Plugging these values into the formula, we get:

Standard Deviation = (15 - 5) / sqrt(12)

Simplifying this expression gives:

Standard Deviation = 10 / sqrt(12)

To obtain the numerical value, we can approximate the square root of 12 as 3.4641:

Standard Deviation ≈ 10 / 3.4641 ≈ 2.8868

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Answer:

This function has a horizontal asymptote at y=0, a vertical asymptote at x=-1, and a hole at (1,2).

Step-by-step explanation:

A rational equation with the given requirements can be written in the form:

f(x) = (x - 1) / [(x + 1)g(x)]

where g(x) is a factor in the denominator that ensures the vertical asymptote at x=-1.

To meet the condition that y=0 is a horizontal asymptote, we need to ensure that the degree of the denominator is greater than or equal to the degree of the numerator.

To create a hole at (1,2), we need to ensure that the factor (x-1) appears in both the numerator and the denominator, so that they cancel each other out at x=1.

One possible function that meets all of these requirements is:

f(x) = (x - 1) / [(x + 1)(x - 1)]

Simplifying this function, we get:

f(x) = 1 / (x + 1)

This function has a horizontal asymptote at y=0, a vertical asymptote at x=-1, and a hole at (1,2).

The series is divergent.

To determine the convergence or divergence of the series[tex][\infty] 3 (2n 5)3 n = 1[/tex] using the integral test, we need to evaluate the following integral:

∫[tex][\infty][/tex]1 3 (2x 5)3 dx

Let's calculate the integral:

∫[tex][\infty][/tex] 1 3 (2x 5)3 dx = ∫[tex][\infty][/tex] 1 24x3 dx

Integrating with respect to x:

= (24/4)x4 + C

= 6x4 + C

To evaluate this integral from 1 to infinity, we substitute the limits:

lim[x→∞] 6x4 - 6(1)4 = lim[x→∞] 6x4 - 6 = ∞

The integral diverges as it approaches infinity. Therefore, by the integral test, the series[tex][\infty] 3 (2n 5)3 n = 1[/tex] is also divergent.

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Evaluating 1010 or 0011 using bitwise logical or results in the bitstring 1011, which combines the two input bitstrings by setting each bit in the output to 1 if either bit in the corresponding pair is 1.

When evaluating 1010 or 0011 using bitwise logical or, we must consider each bit in the two bitstrings and perform the or operation on each corresponding pair of bits. The resulting bit in the output bitstring will be 1 if either of the bits in the pair is 1, and 0 otherwise.

For the first pair of bits, we have 1 or 0, which results in 1. The second pair of bits gives us 0 or 0, resulting in 0. The third pair of bits gives us 1 or 1, resulting in 1. Finally, the fourth pair of bits gives us 0 or 1, resulting in 1.

Putting it all together, the resulting bitstring is 1011. This is the logical or of the two input bitstrings.

In terms of evaluating this operation, it is important to understand the purpose of the logical or. This operation is typically used to combine two sets of conditions or values, where either one or both conditions must be true for the overall condition to be true. In the case of bitstrings, this operation can be useful for combining the results of multiple bitwise operations or evaluating the state of multiple bits in a system.

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part a.

When x= 4,  f(4) = 32.

When x = 5,  f(5) = 41.

When x =  6,  f(6) = 52.

b. No, the values of f will not always be greater than the values of g. because from our solving,  we notice that for any value of x greater than or equal to 8, the values of g will be greater than the values of f.

The function f is defined by f(x) = 2*  while

the function g is defined by g(x) = x² + 16.

When x =  4:

f(4) = 2√4 = 4

g(4) = 4² + 16 = 32.

When x=  5:

f(5) = 2√5

g(5) = 5² + 16 = 41.

When = 6,

f(6) = 2√6

g(6) = 6² + 16 = 52.

In conclusion,  we see that for any value of x greater than or equal to 8, the values of g will be greater than the values of f.

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Answer:

[tex]168 cm^3[/tex]

Step-by-step explanation:

area of a triangle is length times width divided by two.

[tex](6cm*8cm)/2=24cm^2[/tex]

volume of prism is base times height.

[tex]24cm^2*7cm=168cm^3[/tex]

Correct. Well done!!

The required answer is the current in the second parallel wire is approximately 0.446 A.

we can determine the current in the second wire using Ampere's law. Here's a step-by-step explanation:

1. A vertical straight wire carries an upward 29-A current.
2. The force per unit length between the two wires is given as 8.3×10^-4 N/m.
3. The distance between the two parallel wires is 5.5 cm, which is equal to 0.055 m.
The attractive force per unit length of 8.3×10−4 n/m is exerted by the first vertical wire, which carries an upward 29-aa current, on the second parallel wire located 5.5 cm away.
We'll use Ampere's law to find the current in the second wire. The formula for the force per unit length between two parallel wires is:
F/L = (μ₀ × I₁ × I₂) / (2π × d)

where F is the force, L is the length of the wires, μ₀ is the permeability of free space (4π × 10^-7 T·m/A), I₁ and I₂ are the currents in the wires, and d is the distance between the wires.
Rearranging the formula to find I₂, we get:
I₂ = (2π × d × F/L) / (μ₀ × I₁)
Now, plug in the given values:
I₂ = (2π × 0.055 × 8.3 × 10^-4) / (4π × 10^-7 × 29)
I₂ ≈ 0.446 A

So, the current in the second parallel wire is approximately 0.446 A.

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In this problem, we are given two bases for R2, B = {(1, 2), (-1, -1)} and B' = {(-4, 1), (0, 2)}. We are asked to find the transition matrix P from B' to B, and then use this matrix to find [v]B and [T(v)]B'. Finally, we need to find the inverse of P and the matrix A' for T relative to B', and then use these to find [T(v)]B' in two different ways.

To find the transition matrix P from B' to B, we need to express the vectors in B' as linear combinations of the vectors in B, and then write the coefficients as columns of a matrix. Doing this, we get:

P = [ [1, 2], [-1, -1] ][tex]^-1[/tex] * [ [-4, 0], [1, 2] ] = [ [-2, 2], [1, -1] ]

Next, we are given [v]B' = [4, -1]T and asked to find [v]B and [T(v)]B'. To find [v]B, we use the formula [v]B = P[v]B', which gives us [v]B = [-10, 5]T. To find [T(v)]B', we first need to find the matrix A for T relative to B. To do this, we compute A = [tex][T(1,2), T(-1,-1)][/tex]* P^-1 = [ [6, 3], [-1, -1] ]. Then, we can compute [T(v)]B' = A[v]B' = [-26, 5]T.

Next, we are asked to [tex]find[/tex][tex]P^-1[/tex]and A', the matrix for T relative to B'. To find P^-1, we simply invert the matrix P to get P^-1 = [ [-1/2, 1/2], [1/2, -1/2] ]. To find A', we need to compute the matrix A for T relative to B', which is given by A' = P^-1 * A * P = [ [0, -3], [0, 2] ].

Finally, we are asked to find [T(v)]B' in two different ways. The first way is to use the formula [T(v)]B' = P^-1[T(v)]B, which gives us [T(v)]B' = [-26, 5]T, the same as before. The second way is to use the formula[tex][T(v)]B'[/tex] = A'[v]B', which gives us[tex][T(v)]B'[/tex] = [-26, 5]T

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The identity for this trigonometric equation is verified, since the left-hand side and right-hand side are equal.

To verify this identity, we will start by expanding the left-hand side of the equation:

(sin(x) + cos(x))2 = sin2(x) + 2sin(x)cos(x) + cos2(x)

Next, we will simplify the right-hand side of the equation:

sin2(x) − cos2(x) = (sin(x) + cos(x))(sin(x) − cos(x))

Now we can substitute this expression into the original equation:

(sin(x) + cos(x))2 = (sin(x) + cos(x))(sin(x) − cos(x))

To finish, we will cancel out the common factor of (sin(x) + cos(x)) on both sides of the equation:

sin(x) + cos(x) = sin(x) − cos(x)

And after simplifying:

2cos(x) = 0

Therefore, the identity is verified, since the left-hand side and right-hand side are equal.

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Thus, the positive value of δ, the absolute value δ = 0.448 using the chain rule of differentiation, not one of the options given.

To solve for δ, we need to use the chain rule of differentiation. Starting with equation (i), we can take the derivative of both sides with respect to δ:
d/dδ(a/10) = d/dδ(7.52)

Using the chain rule, we can simplify the left side of the equation:
d/dδ(a/10) = (d/d(a/10))(a/10)' = (1/10)(a/10)'

Now we can substitute in the given value for d/dδ(a/10) and solve for (a/10)':
-33.865 = (1/10)(a/10)'
(a/10)' = -338.65

Now we can use equation (i) and substitute in the value for (a/10) and (a/10)':
7.52 = a/10
-338.65 = (a/10)'

Multiplying these equations together, we get:
-2540.468 = a'

Finally, we can use the derivative of the given equation to solve for δ:

a = 75.2δ
a' = 75.2
-2540.468 = 75.2
δ = -33.77/75.2
δ = -0.448

However, the problem asks for a positive value of δ, so we take the absolute value:
δ = 0.448

Therefore, the answer is not one of the options given in the question.

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The negation of the statement "For any integers a, b and c, if a-b is even and b-c is even, then a-c is even" is: "There exist integers a, b, and c such that a-b is even, b-c is even, and a-c is odd." The original statement is true.

The converse of the statement is: "For any integers a, b, and c, if a-c is even, then a-b is even and b-c is even." The converse is false. A counterexample would be a=3, b=2, and c=1. Here, a-c=2 which is even, but a-b=1 which is odd and b-c=1 which is odd.

The inverse of the statement is: "For any integers a, b, and c, if a-b is odd or b-c is odd, then a-c is odd." The inverse is false. A counterexample would be a=4, b=2, and c=1. Here, a-b=2 which is even, b-c=1 which is odd, but a-c=3 which is odd.

The contrapositive of the statement is: "For any integers a, b, and c, if a-c is odd, then a-b is odd or b-c is odd." The contrapositive is true. To see this, assume a-c is odd. Then either a is odd and c is even, or a is even and c is odd. In either case, a-b and b-c are either both odd or both even, so at least one of them is odd.

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The equation of the plane that best fits the given data points is z =200/29 - 133/87x + 196/87y

To find the plane that best fits the given data points, we can use the method of least squares regression. We want to find a plane in the form z = a + bx + cy that minimizes the sum of the squared distances between the actual data points and the predicted values on the plane.

Let's denote the given data points as (x1, y1, z1), (x2, y2, z2), ..., (xn, yn, zn).

The equations for the given data points can be written as follows:

Equation 1: 1a + 0b - 3c = 0

Equation 2: 1a + 4b + 0c = 0

Equation 3: 1a + 3b - 1c = 1

Equation 4: 1a + 1b - 2c = 1

Equation 5: 1a - 1b - 5c = -3

We can express the system of equations in matrix form as AX = B, where:

A = [[1, 0, -3], [1, 4, 0], [1, 3, -1], [1, 1, -2], [1, -1, -5]]

X = [a, b, c]

B = [0, 0, 1, 1, -3]

To solve for X, we can use the least squares method:

X = [tex](A^T*A)^{-1}*A^T*B[/tex]

Let's perform the calculations:

Step 1: Calculate [tex]A^T[/tex] (transpose of A)

[tex]A^T[/tex] = [[1, 1, 1, 1, 1], [0, 4, 3, 1, -1], [-3, 0, -1, -2, -5]]

Step 2: Calculate [tex]A^T*A[/tex]

[tex]A^T*A[/tex] = [[5, 7, -11], [7, 27, 0], [-11, 0, 39]]

Step 3: Calculate [tex](A^T*A)^{-1[/tex] (inverse of A^T * A)

[tex](A^T*A)^{-1[/tex] = [[351/29, -91/29, 99/29], [-91/29, 74/87, -77/87], [99/29, -77/87, 86/87]]

Step 4: Calculate [tex]A^T*B[/tex]

[tex]A^T*B[/tex] = [[-1], [7], [12]]

Step 5: Calculate X

X = [tex](A^T*A)^{-1}*A^T*B[/tex]

 = [[351/29, -91/29, 99/29], [-91/29, 74/87, -77/87], [99/29, -77/87, 86/87]] * [[-1], [7], [12]]

 = [[200/29], [-133/87], [196/87]]

Therefore, the values of a, b, and c that define the plane are approximately:

a = 200/29

b = - 133/87

c= 196/87

The equation of the plane that best fits the given data points is:

z =200/29 - 133/87x + 196/87y

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The probability of Winston rolling a 7 on his first roll and an 8 on his second roll is 0.0046 (rounded to four decimal places).

To find the probability of Winston rolling a 7 on his first roll and an 8 on his second roll, we need to use the concept of probability.

The total possible outcomes when rolling a pair of dice twice is 6 x 6 = 36. There are 6 ways to roll a 7 (1+6, 2+5, 3+4, 4+3, 5+2, 6+1) and only 1 way to roll an 8 (2+6, 3+5, 4+4, 5+3, 6+2).

Therefore, the probability of rolling a 7 on the first roll is 6/36 or 1/6. Since Winston will roll the dice again, the probability of rolling an 8 on the second roll is 1/36 (1 possible outcome out of 36 total outcomes).

To find the probability of both events occurring, we multiply the probabilities of each event together.
P(rolling a 7 on first roll and an 8 on second roll) = P(rolling a 7 on first roll) x P(rolling an 8 on second roll)
P(rolling a 7 on first roll and an 8 on second roll) = 1/6 x 1/36
P(rolling a 7 on first roll and an 8 on second roll) = 1/21

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Answer:

Step-by-step explanation:

Cube B will have larger volume.

Given,

12 in = 1 ft

Volume of Cube A = a³ =  216 in³

Side of Cube A (a) = 6 in

Now,

Volume of Cube B = a³ = (0.6)³

Volume of Cube B = 0.216 ft³

Side of Cube B = 0.6 ft

Convert ft into inches for comparison of volumes:

Side of Cube A = 6 in

Side of Cube A = 0.5 ft

Volume of Cube A  = (0.5)³

Volume of Cube A = 0.125 ft³

Thus after comparison Cube B will have larger volume than Cube A.

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The probability that a randomly selected person will have less than a 3.5 GPA and no job is 0.10 (option c).

In order to calculate this probability, we need to know the proportion of individuals who have less than a 3.5 GPA and no job out of the total population. Let's assume we have this information.

The probability of having less than a 3.5 GPA can be represented by P(GPA<3.5), and the probability of having no job can be represented by P(No job).

If we assume that these two events are independent, we can calculate the joint probability by multiplying the individual probabilities: P(GPA<3.5 and No job) = P(GPA<3.5) * P(No job).

Based on the information provided, the probability that a person will have less than a 3.5 GPA and no job is 0.10.

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Exact maximum y-value: Does not exist for x > 0, Exact minimum y-value: -4 and Corresponding x-value: 2π/3

To find the exact maximum and minimum y-values and their corresponding x-values for one period of the function f(x) = 4cos(2(x + π/16))-2 where x > 0, we need to analyze the behavior of the cosine function and apply the given shift and scaling.

The cosine function oscillates between -1 and 1, so the maximum and minimum values of f(x) will be determined by the amplitude and vertical shift.

The amplitude of the function is 4, which means the maximum value will be 4 and the minimum value will be -4.

To find the x-values that correspond to these extrema, we need to consider the period of the cosine function.

The period of the function f(x) = 4cos(2(x + π/16))-2 is given by 2π/2 = π. This means the function repeats every π units.

Starting with the first occurrence where x > 0, we can set up equations to find the x-values:

For the maximum value:

4cos(2(x + π/16))-2 = 4

cos(2(x + π/16)) = 6/4

cos(2(x + π/16)) = 3/2

Since the cosine function has a maximum value of 1, we can see that this equation has no solutions. Therefore, there are no maximum values for x > 0 in the given interval.

For the minimum value:

4cos(2(x + π/16))-2 = -4

cos(2(x + π/16)) = -2/4

cos(2(x + π/16)) = -1/2

To find the x-values, we need to consider the cosine function's values when it is equal to -1/2.

cos(x) = -1/2 has solutions at x = 2π/3 and x = 4π/3.

However, we need to find the x-values within one period where x > 0. Since the period is π, we need to consider x values within the interval [0, π].

Therefore, the exact minimum y-value and its corresponding x-value for one period where x > 0 is:

Minimum y-value: -4

x-value: 2π/3

To summarize:

Exact maximum y-value: Does not exist for x > 0

Exact minimum y-value: -4

Corresponding x-value: 2π/3

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6300 kg of sand contains about 90 billion grains of sand

The weight of one grain of sand is approximately 0.00007g. We are required to find the number of grains of sand that are present in 6300 kg of sand.

First, let's convert 6300 kg into grams since the weight of a single grain of sand is given in grams. We know that 1 kg is equal to 1000 grams, therefore:

6300 kg = 6300 × 1000 = 6300000 grams

The weight of one grain of sand is approximately 0.00007g.Therefore, the number of grains of sand in 6300 kg of sand will be:

6300000 / 0.00007= 90,000,000,000 grains of Sand

Thus, there are about 90 billion grains of sand in 6300 kg of sand.

Thus, we can conclude that 6300 kg of sand contains about 90 billion grains of sand.

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Based on the inequality 15 > 22 + x, the true statements about the solution of the inequality 15 > 22 + x are:

XS-7

Based on the inequality 15 > 22 + x, let's solve it step by step to determine which statements are true about its solution.

First, we can simplify the right side of the equation: 22 + x.

To isolate x, we subtract 22 from both sides of the inequality: 15 - 22 > 22 + x - 22, which becomes -7 > x.

Now, let's analyze the given options:

OX-7: This statement implies that x is less than or equal to -7. However, the inequality we derived shows that x is greater than -7, not less than or equal to it. Therefore, this statement is false.

XS-7: This statement implies that x is greater than or equal to -7. According to the inequality, x is indeed greater than -7. Therefore, this statement is true.

The graph has a closed circle: In inequalities, a closed circle is used when the boundary value is included in the solution set. In this case, the boundary value is -7. However, the inequality we derived (-7 > x) shows that -7 is not part of the solution. Therefore, this statement is false.

U -6 is part of the solution: The value -6 is not directly related to the inequality, so we cannot determine its inclusion in the solution. Thus, this statement cannot be evaluated as true or false based on the given information.

O-7 is part of the solution: As mentioned earlier, -7 is not part of the solution since the inequality is -7 > x. Therefore, this statement is false.

In summary, the true statements about the solution of the inequality 15 > 22 + x are:

XS-7.

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- The velocity vector is v(t) = 2ti + 7j + (9/t)k.

- The acceleration vector is a(t) = 2i + (9/t^2)k.

- The speed of the particle is given by the magnitude of the velocity vector, which is ||v(t)|| = √(4t^2 + 49 + (81/t^2)).

The velocity vector represents the rate of change of position with respect to time. To find it, we take the derivative of the position vector r(t) with respect to time. In this case, the derivative of t^2 with respect to t is 2t, the derivative of 7t with respect to t is 7, and the derivative of 9 ln(t) with respect to t is (9/t).

The acceleration vector represents the rate of change of velocity with respect to time. To find it, we take the derivative of the velocity vector v(t) with respect to time. The derivative of 2t with respect to t is 2, and the derivative of 9/t with respect to t is (9/t^2).

Finally, the speed of the particle is the magnitude of the velocity vector, which is found by taking the square root of the sum of the squares of the components of the velocity vector. In this case, the speed is given by the expression √(4t^2 + 49 + (81/t^2)), where the squares and reciprocal are applied to the corresponding components of the velocity vector.The velocity, acceleration, and speed of a particle with the given position function r(t) = t^2i + 7tj + 9 ln(t)k are as follows:

- The velocity vector is v(t) = 2ti + 7j + (9/t)k.

- The acceleration vector is a(t) = 2i + (9/t^2)k.

- The speed of the particle is given by the magnitude of the velocity vector, which is ||v(t)|| = √(4t^2 + 49 + (81/t^2)).

The velocity vector represents the rate of change of position with respect to time. To find it, we take the derivative of the position vector r(t) with respect to time. In this case, the derivative of t^2 with respect to t is 2t, the derivative of 7t with respect to t is 7, and the derivative of 9 ln(t) with respect to t is (9/t).

The acceleration vector represents the rate of change of velocity with respect to time. To find it, we take the derivative of the velocity vector v(t) with respect to time. The derivative of 2t with respect to t is 2, and the derivative of 9/t with respect to t is (9/t^2).

Finally, the speed of the particle is the magnitude of the velocity vector, which is found by taking the square root of the sum of the squares of the components of the velocity vector. In this case, the speed is given by the expression √(4t^2 + 49 + (81/t^2)), where the squares and reciprocal are applied to the corresponding components of the velocity vector.

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