There are 40 students in the
classroom. If 25 are boys, what
percent are girls?

r<15 because I am smart dont doubt me

The correct dot plot for the given data would be option A. Number of Errors for the Week for Workstations.

A dot plot is a graph that displays the frequency of a data set by plotting a dot above the number for each occurrence of that number. The x-axis represents the data values and the y-axis represents the frequency of each data value.

In this case, the data represents the number of errors each workstation makes during the week, so the correct way to display the data in a dot plot would be to have the x-axis represent the number of errors and the y-axis represents the frequency of each error. Each dot on the dot plot would be above the number of errors for each workstation.

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Answer:

Step-by-step explanation:

Question 4 I got something different x= 5, y= -4 (double check my work to make sure i used correct equation and all)

Also for slopes does your teacher want you to include the "x". Cuz when I think of slope its only the "m" part which means it should only be -1, -4 but its your call.

first statement is true, the equation shows a linear but not proportional.

The equation which has two variables with first order term and only a constant available in the equation is termed as linear equation. Example of a linear equation, y =mx + b

Given, an equation, y = 225x + 200

where x and y are two variables

x denotes the number of hours the field is being rented

y denotes the total cost

constant 200 implies the flat rate for renting the field.

If we compare this equation to the standard form of linear equation, y = mx + b, where m = slope and b is the y intercept.

 we will find that the above two equation is similar and therefore the equation given in question is a linear relationship.

the coefficient 225 is the slope of equation and the constant 200 is the y intercept.

this given equation is not a proportional relationship.

The first statement is true.

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You swam 50 yards more than your friend.

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.

Given that, you swam 4 sets of 200 yards and your friend swam 5 sets of 150 yards.

Total number of yards you swam 4×200

= 800 yards

Total number of yards your friend swam 5×150

= 750 yards

Number of yards more you swam =800-750

= 50 yards

Therefore, you swam 50 yards more than your friend.

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The distance that light will travel in 3 years, given the speed it travels in one year is

The notion of a Light Year allows us to quantity the distance that light travels in an entire year. This has allowed scientists to quantify with more ease, the distance to other galaxies and planets.

The distance that light travels in a year is 5. 88 x 10¹² miles.

In 3 years therefore, the distance would be:

= 3 x ( 5.88 x 10 ¹²)

= 17.64 x 10 ¹² miles

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The formula for a circle's sector's area is /360o (r2), where r is the circle's radius and is the sector's angle.

Formula for a Sector's Circumference

The following is the formula for a circle's sector's perimeter:

Sector perimeter equals radius plus radius plus arc length.

Sector perimeter equals 2 radius plus arc length.

The relation is used to compute arc length:

Arc length is equal to l = (/360) 2r.

Therefore,

Sector perimeter: 2 Radius + ((/360) 2r)

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Assuming that r is the circle's radius and that is the sector's angle, the formula for the area of a circle's sector is /360o (r2).

A circular sector (also known as a circle sector or a disc sector; symbol: ) is the area of a disc (a closed region bordered by a circle) enclosed by two radii and an arc, where the smaller area is known as the minor sector and the larger as the major sector.

The radius of the circle, r, and the sector angle (in degrees) that the arcs at its centre subtend are also given. A = 1/2 r2 gives the area if the subtended angle is provided in radians.

The area, A, of just the segment may be calculated using the following formula if you know the circle's radius, r, and the sector's central angle,, in degrees.

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Answer:

0.6  cause I got it correct.

The range is found by finding the vertex and noting that it is the minimum or maximum (depending on direction) of the function. You can find the vertex by using -b/2a for the x value and then plugging in to get y value.

What is a function?

A mathematical phrase, rule, or rule that establishes the link between explanatory variables or a dependent variable  In mathematics, curves exist everywhere, and they are crucial for constructing physical links in the sciences.

A Method can be defined by a module, an object, or another function. An internal feature of a class is called a method. Methods are listed inside a base class to make the connections between it class and thus the method clear. A method can be called or invoked using different syntax. We can convert a type into an object before being able to access its methods.

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The partial fraction decomposition of the function is[tex]\\& \Rightarrow \frac{1}{x^2+x^4}=\frac{A}{x}+\frac{B}{x^2}+\frac{C x+D}{x^2+1}\end{aligned}[/tex]

In algebra, a rational fraction—that is, a fraction where the numerator and denominator are both polynomials—can be partially decomposed or expanded by adding a polynomial (potentially zero) and one or more fractions with a lower denominator to the original fraction.

In symbols, the partial fraction decomposition of a rational fraction of the [tex]{\textstyle {\frac {f(x)}{g(x)}},}[/tex]

[tex]{\displaystyle {\frac {f(x)}{g(x)}}=p(x)+\sum _{j}{\frac {f_{j}(x)}{g_{j}(x)}}}[/tex]

Where p(x) is a polynomial, [tex]g_{j}[/tex] for each j is a power of an irreducible polynomial (which cannot be factored into polynomials of positive degrees), and [tex]f_{j}[/tex] for each j is a polynomial with a smaller degree than this irreducible polynomial's degree.

The numerical values of the coefficients is [tex]\frac{1}{x^2+x^4}$[/tex].

Now,

[tex]$\begin{aligned} x^2+x^4 & x^2+x^4 \\ = & x^2\left(1+x^2\right)\end{aligned}$[/tex]

Therefore, the form of the partial fraction decomposition is

[tex]\begin{aligned}& \frac{1}{x^2\left(1+x^2\right)}=\frac{A}{x}+\frac{B}{x^2}+\frac{C x+D}{x^2+1} \\& \Rightarrow \frac{1}{x^2+x^4}=\frac{A}{x}+\frac{B}{x^2}+\frac{C x+D}{x^2+1}\end{aligned}[/tex]

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In the word problem ,the total cost for cruise for total family is $5475.

What is word problem?

Word problems are often described verbally as instances where a problem exists and one or more questions are posed, the solutions to which can be found by applying mathematical operations to the numerical information provided in the problem statement. Determining whether two provided statements are equal with respect to a collection of rewritings is known as a word problem in computational mathematics.

Here the Total members of the Harrison family = 3

Cost of cruise per person = $1825

Now, Total cost for cruise of Harrison family is,

=> Total members × Cost per person

=> 3 × 1825

=> $5475

Hence the total cost for cruise for total family is $5475.

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The value of the given expressions is p = -1.281, though it is also possible for p = 0.781 to be the value.

Take into consideration the equation 3x + 5 = 14, in which 3x + 5 and 14 are two expressions that are separated by the word "equal." The standard form, slope-intercept form, and point-slope form are the three primary formats for linear equations. In a mathematical expression known as an equation, the equals sign appears. Algebra is used in a variety of equations. When you don't know how much to compute in math, you use algebra to approximate the answer.

given

-4p^2=2p-4

p=(-1-sqrt(17))/4=-1.281

p=(-1+sqrt(17))/4=0.781

The value of the given expressions is p = -1.281, though it is also possible for p = 0.781 to be the value.

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Answer:

One glass of milk: 15 carbs

One snack bar: 13 carbs

Step-by-step explanation:

This problem is an example of systems of linear equations. We can set this problem up by defining variable. I used [tex]m[/tex] for the glass of milk and [tex]b[/tex] for the snack bar.

First, we have: 4 glasses of milk and 2 snacks bar have a total of 86 carbs. We can write this as

[tex]4m+2b=86[/tex]

Next: 2 glasses of milk and 3 snack bars have a total of 69 carbs.

We can write this as

[tex]2m+3b=69[/tex]

Now we set it up.

[tex]4m+2b=86[/tex]

[tex]2m+3b=69[/tex]

By dividing both sides of the first equation by 2, we can use the subtraction method to get rid of the variable [tex]m[/tex]. Now we have

[tex]2m+b=43[/tex]

[tex]2m+3b=69[/tex]

Subtract like terms and solve for [tex]b[/tex]

[tex]-2b=-26[/tex]

[tex]b=13[/tex]

Now we substitute [tex]b[/tex] back into the original equation to find [tex]m[/tex].

[tex]2m+(13)=43[/tex]

[tex]2m=30[/tex]

[tex]m=15[/tex]

There you have it. I hope this helps!

The volume of a sphere, to the nearest cubic meter is; 44 cubic meter

We are given that the formula for the volume of a sphere is;

V = [1/(6√π)]S^(3/2)

where;

V is volume

S is the surface area of the sphere

π = 3.14

We are given that  surface area is 60 square meters. Thus, we will now have;

V = [1/(6√3.14)]60^(3/2)

V = 43.713 m³

Approximating to the nearest cubic meter gives;

V = 44 cubic meter

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The rate at which Jose will swim if there was no current would be = 2 km / hour

Speed is defined as the scalar quantity that is used the express the relationship of the distance of a moving object with respect to its time.

Jose swims with the current of the water and against the current of the water within the same time.

When swimming with the current he covers = 8 km

The rate he used with the current = 1 km / hour

When he is swimming against the current he covers = 16 km

Therefore the rate at which he swims against the current = 16/8 = 2km/hour.

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A dodecagon or 12-gon is a twelve-sided polygon.

One of the polygonal shapes with 12 sides, 12 vertices, and 12 angles is the dodecagon. A dodecagon is a two-dimensional plane figure, just like other polygons. 12 equal sides and 12 equal angles make up a standard dodecagon polygon.

Dodecagons that are irregular have uneven sides and angles. Dodecagons can also be concave or convex polygons. The dodecagon's inner angles add up to 1800° in total.

The word dodecagon is derived from Greek words, ‘dodeka‘ which means ‘twelve’, and ‘gon‘ means ‘sides’.

Thus, A dodecagon or 12-gon is a twelve-sided polygon.

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X for type 1 cabinets = 30

Y for type 2 cabinets = 80

And that proven that type 2 cabinets (Y) produced exceeded more than twice the number of type 1 cabinets (X)

As per the equations stated

X + Y = 110  ……….. (1)

Y = 2x + 20  …...... (2)

We substitute Y at equation (1) with equation (2), to find X

X + Y = 110

X + (2X + 20) = 110

3X + 20 = 110

3X = 110 – 20

3X = 90

X = 90 / 3

X = 30

Then, We substitute value X at equation (1 ) with the value that we have discovered before

X + Y = 110

30 + Y = 110

Y = 110 – 30

Y = 80

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The equation of the line passing through the point (-6, 5) and (8, -2) in point-slope form is y - 5 = -0.5(x + 6).

The point-slope form of a line is

y - y1 = m(x - x1)

where (x1, y1) is a point on the line, and m is the slope of the line.

To find the equation of a line given two points, we can use either point and find the slope of the line using the formula:

m = (y2 - y1) / (x2 - x1)

So, we can use the point (-6, 5) and (8, -2)

m = (y2 - y1) / (x2 - x1) = (-2 - 5) / (8 - (-6))

m = -7/14

m = -1/2

Now we can use this slope and the point (–6,5) to find the equation of the line in point-slope form:

y - 5 = -1/2(x - (-6))

y - 5 = -0.5(x + 6)

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Answer: X=19

Step-by-step explanation:

x^2=361

Square root both sides to get rid of the exponent above x.

     [tex]\sqrt{x^2}[/tex]=[tex]\sqrt{361}[/tex]

      x=19

The final image of K would be at (3,-1) after the given sequence of transformation Segment JK.

Dilation is a process for creating similar figures by changing the size.

Segment JK has endpoints J(2,4) and K(6,2).

A dilation by a factor of 1/2 means that each coordinate value will be multiplied by 1/2.

The dilation of segment JK with a scale factor of 1/2 would shrink the segment by half, so the coordinates of K would be (3,1).

Reflecting over the x-axis would change the sign of the y-coordinate, so the final image of K would be at (3,-1).

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Answer:

90 calories in a 6 ounce bottle

Step-by-step explanation:

6oz/x

10oz/150

150 divided by ten is 15

15 times 6 equals 90

Answer: 90 calories is in 6 ounce bottle which is 90

Therefore 128 ways that Peter can make 8 steps and land back at vertex A.

There are two possible directions for each step that Peter can take, either clockwise or counter-clockwise.

Therefore, for 8 steps, there are 2^8 = 256 possible ways that Peter can make the steps. However, only half of these ways will end with Peter back at vertex A, since the other half will have him end at the opposite vertex.

Therefore, there are 256/2 = 128 ways that Peter can make 8 steps and land back at vertex A.

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The height of the tree, given the angle from the ground and the distance from the base of the tree, is 64. 94 feet.

Assuming that this situation was modelled as a right angled triangle, then the angle from the ground to the top of the tree would be such that the distance from the base of the tree would be the adjacent measure and the height of the tree would be the opposite measure.

This means that the relevant operation to use would be Tan.

Using the Tan operation, and assuming the height of the tree was x, the formula would be:

Tan (33 degrees ) = x / Distance from base

Tan (33 degrees ) x / 100

x = 64. 94 ft

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Answer: its number 2

Step-by-step explanation:

Symbolic Form:

P: National elections deteriorate into TV popularity contests

Q: Smooth-talking morons will get elected

The argument can be expressed as:

If P then Q

Therefore, if not P then not Q

This is a valid argument as it follows the logical form of Modus Ponens. We can verify this using a truth table:

P | Q | P → Q | ¬P | ¬P → ¬Q

T | T | T       | F  |  T

T | F | F       | F  |  T

F | T | T       | T  |  T

F | F | T       | T  |  T

The truth table shows that the argument is valid because the final column (¬P → ¬Q) is true for all four cases. This indicates that if the symbolic form of premise (P) is false, then the conclusion (Q) must also be false.

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The percent of monthly earnings that Vera spends on phone apps is 4%.

The percentage simply has to do with the a value or ratio which can be stated as a fraction of 100. It should be noted that when we want to we calculate a percentage of a number, we simply divide it and then multiply the value that is gotten by 100.

Since Vera spent 0.04 of of the earnings on a new phone apps, the percent of monthly earnings did she spend on phone apps will be:

= 0.04.

= 4/100

= 4%

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So on solving the provided question we can say that coefficient of x^2 in  x³ +4x² -7x -2 is 1.

A coefficient in mathematics is a polynomial, a series, or the multiplicative coefficient of a particular term in an expression. Typically numeric, however any expression is permitted. The term "parameter" can also refer to the coefficients themselves if they are variables. A number times a variable equals a coefficient. Coefficient examples include:  The coefficient is 14 in phrase 14c 14c 14c. The coefficient is 1 for word g. multiplies the variable by this amount. example  Given that "z" is a variable and that 6z is the definition of the term, the coefficient is 6. One is the coefficient of the square of x.

here,

coefficient of x^2 in  x³ +4x² -7x -2 is 1

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Answer:

30%

Step-by-step explanation:

The level of decay is determined by the number raised to the power.

y = 0.4(0.7)^t

If you had 1^t, there would be no decay or growth since 1^t is always 1.

Instead, you have 0.7^t

As t increases, 07^t decreases. That is where the decay comes from.

Now look at 0.7

In the general decay equation, you have

y = a(1 - r)^t

r is the rate of decay.

Here we have 0.7

0.7 = 1 - 0.3

the rate of decay is 0.3 or 30%

Answer:

The equation y = 0.4(0.7)^t represents an exponential decay of 30%. The decay rate is determined by the value in the parentheses, which in this case is 0.7. To calculate the decay rate, you can subtract this value from 1, giving you 1 - 0.7 = 0.3, or 30%.

Step-by-step explanation:

The value of x will be cos^-1 549/900.

What is Law of Cosine ?

The relationship between a triangle's side lengths and the cosine of its angle is known as the law of cosines. Additionally known as the cosine rule.

We know that ,

a²= b²+c² - 2bc cosα, where α is the angle between b and c.

Here, b = 18 , c= 25, a = 20 and cos x

So, a²= b²+c² - 2bc cosα

     (20)² = (18)² + (25)² - 2×18×25 cos x

     400 = 324 + 625 - 900 cos x

    900cos x = 549

         cos x = 549/900

 hence, x = cos^-1 549/900

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We have drawn the graph of the given linear inequality.

What is linear inequality?

A linear inequality is a mathematical statement involving a linear function and one of the symbols <, >, ≤, or ≥. The general form of a linear inequality in one variable is:

ax + b <, >, ≤, or ≥ c

where a, b, and c are constants, and x is the variable.

To graph the inequality 2y - 4x < 8, we first need to put it in slope-intercept form, y = mx + b, so we can see the slope and y-intercept of the line. We can do this by adding 4x to both sides:

2y - 4x < 8

2y < 4x + 8

Then we divide both sides by 2 to get y by itself:

y < 2x + 4

Now we have y = 2x + 4 in slope-intercept form, where the slope is 2 and the y-intercept is 4. To graph the line, we can use the y-intercept as a starting point and use the slope to find additional points on the line.

To graph the line, we can follow these steps:

Plot the y-intercept, which is (0,4) on the graph.

Using the slope of 2, find a second point by going up 2 units and over 1 unit. This point is (1,6)

Draw a line through these two points.

Hence, we have drawn the graph of the given linear inequality.

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