A teacher gave her students two tests. If 45% of the students passed both tests and 60% passed the first test. What is the probability that a student who passed the first test also passed the second?

Answer:

26 inches

Step-by-step explanation:

The snail starts 20 inches above the ground: +20

The snail slips (goes down) 6 inches: 20 - 6 = 14

The snail goes up 12 inches: 14 + 12 = 28

The snail is 28 inches above the ground.

Hope this helps!

Answer: Let me explain!

Step-by-step explanation:

Well, this is easy, I’ll explain it.
We know the value of these computers are going to go down 20% each year. So since we know that, we can multiply 20 percent by the amount of years, which is 2, so 20 times 2 is 40, so the computers decreased in value by 40 percent!

Now that that’s established, we need to subtract forty percent of 2500, from the original price, 2500.

(To do that, move the decimal place over one to get 250, which is 10%, then multiply by 4, to get 40 percent of 2500, which is 1000, in case you weren’t sure on how to do that :)

Then, subtract 1000 from 2500, and that is your answer!

$1,500

Answer:

{0.0853,0.1531}

Step-by-step explanation:

[tex]\displaystyle CI=\hat{p}\pm z\sqrt{\frac{\hat{p}\bigr(1-\hat{p}\bigr)}{n}}[/tex]

[tex]\displaystyle CI_{98\%}=\frac{59}{495}\pm2.326\sqrt{\frac{\frac{59}{495}\bigr(1-\frac{59}{495}\bigr)}{495}}\approx\{0.0853,0.1531\}[/tex]

Answer:

Step-by-step explanation:

3:7 = ___: 49

3 : 7 = x : 49

x = 3 × 49 ÷ 7

x = 147 ÷ 7

x = 21

3 : 7 = 21 : 49  (your answer)

The lengths of the sides and angles of the triangles, obtained using Pythagorean Theorem and trigonometric ratios are;

D. 19.2

C. 5.3

F. 2·√5

G. √3

H. 8·√3

K. 18.9

O. 15.5

N. 14.5

M. 41.4°

I. 74.1°

The Pythagorean Theorem states that the square of the length of the hypotenuse side of a right triangle is equivalent to the sum of the squares of the legs of the triangle.

D. x = √(15² + 12²) ≈ 19.2

C. x = √(10² - 8.5²) ≈ 5.3

F. x = 2·√(5) (Special triangles)

G. tan (60°) = 30/x = √3

x = 30/√3 = 10·√3

H. x/16 = (√3)/2

x = 16 × (√3)/2 = 8·√3

x = 8·√3

K. tan(34°) = x/28

x = 28 × tan(34°) ≈ 18.9

O. cos(55°) = x/27

x = 27 × cos(55) ≈ 15.5

N. sin(16°) = 4/x

x = 4/(sin(16°) ≈ 14.5

M. x = arccos(9/12) ≈ 41.4°

I. x = arcsin(25/26) ≈ 74.1°

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Answer: Looks like its -.3

Answer:

Step-by-step explanation:

-3.6 + -0.3 = -3.9

-3.9 + -0.3 = -4.2

-4.2 + -0.3 = -4.5

you are adding - 0.3 to each number to get the next number in the sequence

=

+

The expression that will represent the volume of the identical rectangular base pyramid is: 2[One-third (5) (0.25) (2)] cubic units.

To calculate for the volume of a rectangular base pyramid, we use the formula:

volume = 1/3 × area of base rectangle × height

volume of one identical pyramid = (1/3 × 5 × 0.5 × 2)cubic units

volume of the two identical pyramid = 2(1/3 × 5 × 0.5 × 2)cubic units.

Therefore, the expression that will represent the volume of the identical rectangular base pyramid is: 2[One-third (5) (0.25) (2)] cubic units.

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Answer:

KL = 7, so B is the correct answer.

The similarity between the cube and cuboid is that both have 12 edges.

option C.

A cube is a solid three-dimensional figure, which has 6 square faces, 8 vertices and 12 edges.

So a cube is a three-dimensional solid figure, having 6 square faces and 12 edges.

A cuboid is a three-dimensional geometric shape that looks like a book or a rectangular box.

A cuboid can be defined as a three-dimensional solid shape that has 12 edges, 8 vertices, and 6 faces and each of its faces is rectangular in shape.

So the similarity between a cube and cuboid is that both have 6 faces and 12 edges.

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Following a translation of (x, y) (x - 1, y + 2) and a dilation by a scale factor of 2 centred at the origin, the coordinates of T are T''(8, 8).

Following translation and dilation, we must take the following actions to determine the new coordinates of point T:

1) Translation: (x, y) = (x - 1, y + 2).

T' = (5 - 1, 2 + 2)

= (4, 4) applies the translation to the original coordinates of T.

2) Dilation: Scale factor of 2 centered at the origin

Multiply the translated coordinates by the scale factor of 2:

T'' = (2 × 4, 2 × 4)

= (8, 8)

Therefore, the coordinates of T after the translation (x, y) → (x - 1, y + 2) followed by a dilation by a scale factor of 2 centered at the origin are T''(8, 8).

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Answer:

x = -5

Step-by-step explanation:

-5 - 15x - 10 = -4x - 8x

-5 - 10 = -4x - 8x + 15x

-15 = -12x + 15x

-15 = 3x

x = -5

The sum of the expressions 12√23x¹³ + 14√23x¹³ is in its simplest form if x > 0 is 26x⁶√23x

From the question, we have the following parameters that can be used in our computation:

12\sqrt{23x^{13}}+14\sqrt{23x^{13}}

Express the summation expression, properly

So, we have

12√23x¹³ + 14√23x¹³

Next, we add the terms of teh expression

Using the above as a guide, we have the following:

12√23x¹³ + 14√23x¹³ = 26√23x¹³

Take the square root of x¹³

12√23x¹³ + 14√23x¹³ = 26x⁶√23x

The above expression is in its simplest form if x > 0.

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Answer:

(-6,0)

Step-by-step explanation:

An equation of a line can be modeled as y = mx + b where m is slope and b is y-intercept.

For the line r, we can model the equation as y = mx + 3 since the line intersects y-axis at (0,3) as seen in the attachment.

For the line t, we can model the equation as y = mx - 6 as the problem gives y-intercept for line t equal to -6. Hence, the line t intersects y-axis at (0,6)

Next, we have to find the slope of line t by finding the slope of line r in the attachment. Apply the rise over run by counting the steps, you can see in the attachment that I put to learn how to count rise and run of a line. Also note that the value in attachment here is a scalar quantity, meaning only magnitude, no direction.

So we will have the slope of -1 since a line graph is heading down so the output decreases as input increases. Therefore, we know that m = -1 for both lines. Therefore, for the line t, we can model the new equation to:

[tex]\displaystyle{y=-x-6}[/tex]

Then we find the x-intercept of the line by letting y = 0. Thus,

[tex]\displaystyle{0=-x-6}\\\\\displaystyle{x=-6}[/tex]

Therefore, the x-intercept of line t is at (-6,0).

Answer:

(-6,0)

Step-by-step explanation:

We need to determine the equation of line r first to find the x-intercept of line t.

The slope of a line passing through two points (x₁, y₁) and (x₂, y₂) is given by the formula:

[tex]slope = \frac{y_2 - y_1}{x_2 -x_1}[/tex]

For line r passing through (3, 0) and (0, 3), the slope is:

[tex]slope = \frac{3 - 0}{0 - 3} = -1[/tex]

Since line t has the same slope as line r, its slope is also -1.

The equation of a line in slope-intercept form (y = mx + b) is determined by its slope (m) and y-intercept (b).

We know that the slope (m) of line t is -1, and the y-intercept (b) is -6. Substituting these values into the slope-intercept form, we get:

y = -x - 6

To find the x-intercept, we set y = 0 and solve for x:

0 = -x - 6

Adding x to both sides:

x = -6

Therefore, the x-intercept of line t is (-6,0).

The volume of the shape for Jackson's ice cream is given as follows:

11.85 in³.

The volume of a cone of radius r and height h is given by the equation presented as follows:

V = πr²h/3.

Hence the volume of the cone in this problem is given as follows:

V = 3.14 x 1.5² x 5/3

V = 11.78 in³.

The volume of an hemisphere of radius r is given as follows:

V = 2πr³/3.

Hence the volume of sphere is:

V = 2π x 1.5³/3

V = 7.07 in³.

Hence the total volume is given as follows:

11.78 + 7.07 = 11.85 in³.

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1/4π radians is approximately equal to 45 degrees.

To convert a value from radians to degrees, multiply the value by 180/π. For example, to convert π/4 radians to degrees, multiply π/4 by 180/π to get 45 degrees. This conversion is useful for converting angles between the two units of measurement.

Degrees = Radians × 180/π.

Therefore, to convert 1/4π radians to degrees, we have:

Degrees = (1/4π) × (180/π) ≈ 45°

Hence, 1/4π radians is approximately equal to 45 degrees.

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The required justification for the solution to the equation is shown in the solution part.

As per the given equation, the required solution would be as follows:

Given:

17/3 - (3/4)x = 1(/2)x + 5

Subtraction property of equality:

17/3 - (3/4)x - 17/3 = 1(/2)x + 5 - 17/3

- (3/4)x =  1(/2)x - 2/3

Addition property of equality:

- (3/4)x - 1(/2)x =  1(/2)x - 2/3 - 1(/2)x

-(5/4)x = -2/3

Multiplication property of equality:

-(5/4)x × -4/5 = -2/3 × -4/5

Simplification:

x = 8/15

The required justification for the solution to the equation is shown in the solution part.

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Answer:

Answer shown in picture.

Answer: 360 containers

Step-by-step explanation: 1 5/8 in decimal form is 1.625 pounds. Divide 585 by 1.625 pounds you get 360. It takes 360 containers to hold 585 pounds of fruit

given that m is parallel to n,

the angle opposite (2x + 16)° is also (2x + 16)° as vertically opposite angles are equal.

using the corresponding angle rule we know that:

2x + 16 = 96

2x = 80

so x = 40

The values of  x and y is x=8 and y=12.

We are given that;

The dimensions=7 and 24

Now,

(x+y)^2= 7^2 + 24^2

x^2+y^2+2ab=49+416

x^2+y^2+2xy=465

Also, 7^2=x2+h2

49=x2+15

x2=49+15

x2=64

x=8

Substituting the values of x

8+y=20

y=12

Therefore, by Pythagoras theorem the answer will be x=8 and y=12.

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The expression that represents a purely imaginary number is:

[tex]3i^5 + i (2 - 4i^3) - 2 (-3 + i)[/tex]

Option D is the correct answer.

We have,

A pure imaginary number is a number that does not have a real part and can be written in the form of bi, where b is a real number and i is the imaginary unit (√(-1)).

We have,

[tex]3i^5 + i (2 - 4i^3) - 2 (-3 + i)[/tex]

In this expression, we can simplify and rewrite it as:

[tex]3i^5 + i(2 - 4i^3) + 6 - 2i[/tex]

Now, let's evaluate the powers of i:

[tex]i^5 = i^{4 + 1} = i^4 \times i = 1 \times i = i\\i^3 = i^{2 + 1} = i^2 \times i = (-1) \times i = -i[/tex]

Substituting these values back into the expression:

[tex]3i^5 + i(2 - 4i^3) + 6 - 2i = 3i + i(2 - 4(-i)) + 6 - 2i[/tex]

= 3i + i(2 + 4i) + 6 - 2i

= 3i + 2i + 4i² + 6 - 2i

= 3i + 2i + 4(-1) + 6 - 2i

= 5i - 4 + 6 - 2i

= 5i - 2i - 4 + 6

= 3i + 2

The expression 3i + 2 represents a pure imaginary number, as it has no real part (the constant term is 2 and does not involve the imaginary unit i).

Thus,

The expression that represents a purely imaginary number is:

[tex]3i^5 + i (2 - 4i^3) - 2 (-3 + i)[/tex]

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The value of arc JK is determined as arc JK = 28⁰.

The value of arc JK is calculated by applying intersecting chord theorem, which states that the angle at tangent is half of the arc angle of the two intersecting chords.

Also this theory states that arc angles of intersecting secants at the center of the circle is equal to the angle formed at the center of the circle by the two intersecting chords.

arc JK =  m∠JNK

From the diagram, we have N = 152⁰

m∠JNK = ¹/₂ ( 360 - (152 + 152) (sum of angles at a point)

m∠JNK = 28⁰

The value of arc JK is calculated as follows;

arc JK = 28⁰

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The rate is 5.2%

After 10 years, the money will amount to  £4150.

We know that the compound interest can be obtained from;

[tex]A = P(1 + r/n)^{nt}[/tex]

The rate is obtained from;

I = A - P

I = interest

A = amount

P = principal

r = rate

n = Number of times compounded

t = time in years

Then;

I = £2630.00 -  £2500.00

I = £130

I = PRT/100

130 = 2500 * R * 1/100

R = 130 * 100/2500

R = 5.2%

After 10 years;

[tex]A = 2500 ( 1 + 0.052)^{10}[/tex]

A = £4150

Thus this is the amount after 10 years

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The results of the product of 12 and 4 decreased by 15 is 33

Product refers to another term which means multiplication of numbers.

product of 12 and 4

= (12 × 4)

decreased by 15 means 15 is subtracted from the expression

= (12 × 4) - 15

Following the rules of PEMDAS

P = parenthesis

E = exponents

M = multiplication

D = Division

A = addition

S =subtraction

So,

(12 × 4) - 15

= 48 - 15

= 33

Hence, 33 is the product of 12 and 4 decreased by 15

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The value of the product of 12 and 4 decreased by 15 is 33

From the question, we have the following parameters that can be used in our computation:

The product of 12 and 4 decreased by 15

The product of 12 and 4 is expressed as

12 * 4

Evaluate

12 * 4 = 48

When decreased by 15, we subtract 15 from both sides of the equation

using the above as a guide, we have the following:

12 * 4 - 15 = 48 - 15

Evaluate

12 * 4 - 15 = 33

Hence, the product of 12 and 4 decreased by 15 is 33

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The height h of the cylinder is 9 meters.

A cylinder is simply a 3-dimensional shape having two parallel circular bases joined by a curved surface.

The surface area of a cylinder is expressed as;

Surface Area = 2πrh + 2πr²

Given that; the surface area is 104π m² and the radius as 4 m.

We need to solve for the height (h).

Plug the values into the above formula:

Surface Area = 2πrh + 2πr²

104π = 2πrh + 2πr²

104π = 2π( rh + r² )

Divide through by 2π

52 = rh + r²

52 = ( 4 × h) + ( 4² )

52 = 4h + 16

Subtract 16 from both sides

52 - 16 = 4h + 16 - 16

52 - 16 = 4h

36 = 4h

4h = 36

h = 36/4

h = 9 meters

Therefore, the height is 9 meters.

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The interest rate for the first period is $287.22

To obtain the first period interest, we use simple interest formula;

Simple Interest = Principal * Rate * Time

Given:

Principal = $45,687.23

Annual interest rate = 7.555%

Interest period = Monthly

Convert the annual interest rate to a monthly interest rate.

Monthly interest = Annual interest/ 12 = 7.555/12 = 0.6295%

Interest = Principal * Monthly interest rate * Time

Since it's the first period, the time is 1 month:

Interest = $45,687.23 * 0.62958333% * 1

Interest = $45,687.23 * 0.0062958333

Interest ≈ $287.22

Therefore, the first period interest is $287.22.

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The solution of the given inequality is -3<x<4.

The given inequality is,

|6x-3| < 21

Here absolute function is applied in the given expression,

Therefore,

Case 1

⇒ (6x-3) >  -21

⇒   6x-3 > -21

Add 3 both sides,

⇒         6x > -18

⇒         6x > -3

Divide by 6 both sides we get,

⇒           x > -3

Case 2:

⇒  (6x-3) < 21

⇒    6x-3 <  21

Add 3 both sides,

⇒ 6x-3+3 <  21+3

⇒         6x <  21+3

⇒         6x <  24

Divide by 6 both sides we get,

⇒           x <  4

Now plotting the graph of this inequality we get:

-3<x<4 is the solution.

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Answer:

last option

Step-by-step explanation:

let g = 3,

9/5 + 7/2(3)

9/5 + 21/2

adjust to a common denominator of ten to get;

18/10 + 105/10

= 123/10 = 12 3/10

so the last option !

Answer:

 0.12

Step-by-step explanation:

Given the frequencies of occurrence in the diagram, you want to know the probability of A and B.

The probability of an event is the ratio of the number of times it occurs to the total number of trials.

The diagram shows the event (A and B) occurs 6 times out of a total of 6+6+20+20 = 52 trials.

  P(A and B) = 6/52

  P(A and B) ≈ 0.12

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