Find the probability that a randomly selected student prefers dogs or is female enter answer as a fraction or decimal

Answer:

x = ±8

Step-by-step explanation:

X^2- 64

Set this equal to 0

x^2 -64 =0

Add 64 to each side

x^2-64+64 = 64+64

x^2 = 64

Take the square root on each side

x = ±sqrt(64)

x = ±8

Answer:

Step-by-step explanation:

a²-b²=(a+b)(a-b)

x²-64=x²-8²

=(x+8)(x-8)

Answer: the computer loses 50% of its value each year

Step-by-step explanation:

Answer:

706.95in²

Step-by-step explanation:

This problem bothers on the mensuration of solid shapes, a cylinder

Step one

The trash can has a cylindrical shape

The distance from the center to the edge is the radius r= 15in

Step two

Area of top (circular ) = πr²

A= 3.142*15²

A= 3.142*225

A= 706.95in²

Answer:

YES

Step-by-step explanation:

it is negative and it not a whole number there is a decimal point

Answer:

The vertex of the function is at (–3,–16)

The graph is increasing on the interval x > –3

The graph is positive only on the intervals where x < –7 and where x > 1

Step-by-step explanation:

The roots of this function are the values that make f(x) = 0. As the equation is already factored, we can see that the roots are x1 = 1 and x2 = -7

The x-coordinate of the vertix can be calculated as:

x_v = (x1 + x2)/2 = -6/2 = -3

So the first statement: "The vertex of the function is at (–4,–15)" is wrong.

The y_coordinate of the vertex is:

f(x_v) = (x_v - 1)*(x_v + 7) = (-3 -1) * (-3 +7) = (-4) * (4) = -16

So the second statemente: "The vertex of the function is at (–3,–16)" is correct.

for values of x greater than x_v = -3, the graph increases, as the equation represents a parabola with concavity upwards. So the third statement is correct.

As the roots are 1 and -7 and the concavity is upwards, the parabola have positive values for x<-7 and x>1. So the fourth statement is correct.

For values of x< -4, the parabola can have both positive or negative values (it has positive values for x < -7) so the fifth statement is wrong.

Answer:

B. The vertex of the function is at (–3,–16).

C. The graph is increasing on the interval x > –3.

D. The graph is positive only on the intervals where x < –7 and where

x > 1.

yes because you have to pay more it's tricky

Answer:

The first picture is A

The second picture is 21.8

The third picture is 20

The fourth picture is B

Step-by-step explanation:

4x + 8x = 180

12x = 180

x = 15

90 - 68.2 = 21.8

7x + 10 = 150

7x = 140

x = 20

Angle A = 63

180 - 63 = 117

Answer:

The first picture is A

The second picture is 21.8

The third picture is 20

The fourth picture is B

Step-by-step explanation:

hope this helps

Answer:

Area of shaded region/area of square = [tex]\pi[/tex]/8

[tex]\frac{50\pi cm^2 }{400 cm^2} = \frac{1}{8}[/tex]

Area of the semi-circle: 50[tex]\pi[/tex] cm^2

Step-by-step explanation: The problem asked us to prove that the area of the shaded region within the diagram divided by the area of the square equals 1/8. An image will be provided down below for visual representation.

First, we must figure out the area of the shaded region. We do this by finding the area of the semi-circle inside the arc circle that goes A to C.

Area of a semi-circle (diameter): [tex]A = \frac{\pi * d^2}{8}[/tex]

[tex]A = \frac{\pi *(20)^2}{8}[/tex]

[tex]A = 50\pi cm^2[/tex]

Now to find the area of the shaded region, we must subtract the area of the semi-circle from the area that covers the arc circle AB.

In the diagram, we can see that the arc circle within the square looks like a quarter circle. We need to manipulate the equation to highlight this.

Area of a semi-circle (radius) divided by 4  = [tex]A = \frac{\pi *r^2}{4}[/tex]

[tex]A = \frac{\pi *20^2}{4} \\A = 100\pi\\A = 100\pi - 50\pi \\A = 50\pi cm^2[/tex]

Area of a square = [tex]A = s^2[/tex]

[tex]A = (20)^2[/tex]

A = 400 cm^2

Now we take these two solutions to see if it equal [tex]\frac{\pi }{8}[/tex].

[tex]\frac{50\pi }{400} \\\frac{50*\pi }{50*8} = \frac{\pi }{8}[/tex]

That is how we get to our final answer: [tex]\frac{\pi }{8}[/tex]

Answer:

7.5 meters long

Step-by-step explanation:

10/2 = 5

15/2 = 7.5

The shadow is half as long as the pole.

hope this helps :)

Answer:

7.5 meters

Step-by-step explanation:

Actual : shadow

10 : 5

15 : X

10/5 = 15/X

X = 15 × 5/10

X = 7.5

Answer:

Step-by-step

Two Small End squares

Square area = s^2

s = 3

s^2 = 9

But there are 2 of them so the total area = 2 * 9 = 18

Two Middle Triangles.

The height of each triangle = 7 - 3 = 4

The height of each triangle =  4/2 = 2

Each triangle has a height of 2

The length of each triangle = 5 + 5 = 10

Area of one triangle = 1/2 * 2 * 10 = 10

Area of both triangles = 20

Area of Left over rectangle.

Area = L*W

Area = 10 * 3

Area = 30

Total Area

30

20

18

68  is the total area.

Which I think is A. I really can't read the choices well

Answer:

68 In²

Step-by-step explanation:

Because it is the "Correct Answer"

Answer:

7.4cm

Step-by-step explanation:

diameter =2radius

=2×4.7

=7.4cm

The diameter of circle A with a radius of 4.7 cm is 9.4 cm.

To find the diameter of a circle, you can use the formula: diameter = 2 * radius. Given that circle A has a radius of 4.7 cm, the diameter would be 2 * 4.7 = 9.4 cm.

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Answer:

32.5

Step-by-step explanation:

its a trick question

Answer:

d ≤ 95

Step-by-step explanation:

The inequality that states we have at most 95 days is d≤ 95.

A connection between two expressions or values that is not equal to one another is referred to as "inequality" in mathematics.

The inequality can be resolved by adding the same amount to each side, subtracting the same amount from each side, multiplying or dividing each side by the same positive integer, and more. If you multiply or divide either side by a negative value, you must flip the inequality sign.

If d represents how many days are left in school this year.

And we have at most 95 days.

Then,

d can not be more than 95.

d ≤ 95

Therefore, the inequality is d ≤ 95.

To learn more about the inequality in mathematics;

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Answer:

[tex]\frac{x}{3}[/tex]+4

Step-by-step explanation:

I don't think it can be simplified more than that

Answer:

x= -12

Step-by-step explanation:

x/3 -2+6 =0

x/3 +4 =0

x/3 = -4

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

x = -12

Answer:

a

Step-by-step explanation:

i got it right!

Answer:

A

Step-by-step explanation: i got it right on edg-enuity

Answer:

2 1/6 chapters per hour

Step-by-step explanation:

Find the unit rate, as follows:

   9.75 chapters

 ----------------------- = 2.166666 ... chapters per hour, or

     4.5 hours                            2 1/6 chapters per hour

The unit rate in chapters per hour is 13/6.

The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.

For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.

12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.

As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.

This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.

Given:

Chang reads 9 3/4 chapters in 4 1/2 hours.

So, the unit rate of reading is

= 9 3/4 / (4 1/2)

= (39/4) / (9/2)

= 39/4 x 2/9

= 13/2 x 1/3

= 13/6.

Hence, the unit rate is 13/6.

Learn more about Unitary Method here:

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Answer:

B or 4

Step-by-step explanation:

Answer:

102

Step-by-step explanation:

Answer:

5  2/9

Step-by-step explanation:

Answer: 5 and 2/9

Step-by-step explanation: Since 9 goes into 47 five times with a remainder of 2, 47/9 is equal to the mixed number 5 and 2/9.

Answer:

He score lower on the 41 out of 55

Step-by-step explanation:

32/40 = .80 or 80%

41/55 = 0.75 or 75%

Answer:

Lower score in Science

Step-by-step explanation:

32/40 × 100 = 80%

41/55 × 100 = 74 6/12 %

Answer: 15 yards

Step-by-step explanation:

From the question, we have been informed that the Steelers are on the Cowboys' fifteen-yard line. Using the place value mat to calculate how much farther Steelers need to travel to score a touchdown goes thus:

Since the play is 15 yards from the Cowboys end-zone, therefore Steelers need to travel 15 yards for them score a touchdown.

Final answer:

The Steelers are 85 yards away from the end zone.

Explanation:

To calculate how much farther the Steelers need to travel to score a touchdown, we need to know the distance from the Cowboys' fifteen-yard line to the end zone. The distance between each yard line on a football field is 10 yards. Since the Steelers are on the fifteen-yard line, they are 85 yards away from the end zone (100 yards - 15 yards = 85 yards).

Answer

The student ate 72ounces of fruit snacks

Explanation

If there are 20packs of fruit snacks in a box and each pack weighs 6 ounces, the total weight of 20packs will be 20×6 = 120ounces

If there are 48 ounces of fruit snacks left in the box after student has eaten some, the amount of ounces of fruit eaten by the student will be:

Total number of ounces of 20packs - weight of left over snacks

= 120-48

= 72ounces

The students ate 72 ounces of fruit snacks.

First, we need to calculate the total weight of the fruit snacks when the box is full. Since there are 20 packs in a box and each pack weighs 6 ounces, the total weight of a full box is:

[tex]\[ 20 \text{ packs} \times 6 \text{ ounces/pack} = 120 \text{ ounces} \][/tex]

Next, we are given that there are 48 ounces of fruit snacks left in the box after the students have eaten some. To find out how many ounces were eaten, we subtract the remaining weight from the total weight of a full box:

[tex]\[ 120 \text{ ounces} - 48 \text{ ounces} = 72 \text{ ounces} \][/tex]

Therefore, the students ate 72 ounces of fruit snacks.

The students ate 72 ounces of fruit snacks.

Answer:

17

Step-by-step explanation:

We need just to put y and z into polynomial, so

[tex]0.3 \times 10 + \frac{10}{5} = 3 + 2 = 5 \\ [/tex]

Answer:

The ratio of the total surface area to the lateral (curved) surface area of the cylinder is 5:3

Step-by-step explanation:

The height of a right circular cylinder is 1.5 times the radius of the base.

Let the radius of base be x

So, Height of a right circular cylinder = 1.5x

Total surface area of cylinder =[tex]2 \pi r h + 2 \pi r^2 = 2 \pi r(h+r)=2 \pi \times x(x+1.5x)=2 \pi \times x \times 2.5x[/tex]

Curved surface area of cylinder = [tex]2 \pi rh = 2 \pi \times x \times 1.5 x[/tex]

So, Ratio of the total surface area to the lateral (curved) surface area of the cylinder = [tex]\frac{2 \pi \times x \times 2.5x}{2 \pi \times x \times 1.5 x}=\frac{2.5}{1.5}=\frac{25}{15}=\frac{5}{3}[/tex]

Hence the ratio of the total surface area to the lateral (curved) surface area of the cylinder is 5:3

Answer: -17.5

Step-by-step explanation:Use this rule:

1. -a-b=-(a+b)−a−b=−(a+b).

-(12.5+4.8)−(12.5+4.8)

2.Use the algorithm method.

1  

1 2 . 5

+  4 . 8

1 7 . 3

3.After simplification, we have:

-(12.5+4.8)=-17.3−(12.5+4.8)=−17.3

4. Therefore, -12.5-4.8=-17.3−12.5−4.8=−17.3.

-17.3−17.3

Answer:

2 > x

Step-by-step explanation:

-2x + 6 > 3x - 4

Add 2x to each side

-2x+2x + 6 > 3x+2x - 4

6 > 5x-4

Add 4 to each side

6+4 > 5x-4+4

10 >5x

Divide each side by 5

10/5 > 5x/5

2 > x

Answer:

x < 2

Step-by-step explanation:

-2x + 6 > 3x - 4

6 + 4 > 3x + 2x

10 > 5x

2 > x

x < 2

First, we have to add them all together to get the total amount of markers.

2 + 1 + 3 + 2 + 2 = 10

Red: 3/10

Yellow: 2/9

3/10 x 2/9 = 6/90

Simplify: 6/90 = 1/15

C. 1/15 would be your answer.

Hope this helps! Have a great day!

Answer:

Step-by-step explanation:

7(4p +2q +3r)= 7*4p + 7*2q + 7*3r

                     = 28p + 14q + 21r

Answer:

28p + 14q + 21r

Step-by-step explanation:

There you go hope that helps