The price of a DVD movie was reduced from $20 to $18. By what percentage was the price of the DVD movie reduced? *

A. 10%
B. 2%
C. 8%
D. 12%

Sorry wrong answer, disregard my last answer.

Answer:

Her recent math test

Step-by-step explanation:

on the math test she scored 51 out of 60 points which is 51/60. this equals 0.85 which when converted to a percentage is 85%. on the science test she scored 72 out of 90 points which is 72/90. this equals 0.8 as a percentage is 80%  

Answer:

92.044

Step-by-step explanation:

The variance = 36

σ² = 36 = 6

The probability that x is less than 88 is equal to 0.25

So probability of (x<z) = 0.25

From the z table, z = -0.674

Using the z formula,

z = x-u/σ

Z = -0.674

X = 88

σ = 6

When we insert these formula we have:

-0.674 = 88 - u/6

6 x -0.674 = 88- u

-4.044 = 88 - u

92.044 = u

Therefore from the calculations above the mean of X is 92.044 and it is approximately 92.

Answer:

4(5 - 7x) = 6 - 12

20-28x=6-12x

Subtract 20 from both sides

20-28x-20=6-12x-20

Simplify

-28x=-12x-14

Add 12x to both sides

-28+12x=-12x=-12x-14+12x

Simplify

-16x=-14

Divide both sides by -16

-16/-16 = -14/-16

Anw

7/8= 0.875

Answer:

.

Step-by-step explanation:

Answer:

The ratio of apple trees to cherry trees is 14a to 1c

Step-by-step explanation:

Answer:

The answer is A. 105

Step-by-step explanation:

it's more tilted so it can't be a lower number, the only option is 105

Answer:

Its A

Step-by-step explanation                                                                                         The dolphin swam 3 feet more which is -7

Answer:

there's no picture to look at the choices

Step-by-step explanation:

sorry I would help

Answer:

L = 2 4/5 feet

Step-by-step explanation:

A = L x W

6 = L x 2 1/7

divide both sides by 2 1/7

6 divided by 2 1/7 = L (is the same as multiplying by the reciprocal)

6 x 7/15 = L

L = 14/5 or 2 4/5

chan eil agad ach sgrùdadh a dhèanamh air google!

5x-50 = 30-15x, 20x = 80, x = 4,

x=4!

Answer:

x=4

Step-by-step explanation:

5x-50 = 30-15x, 20x = 80, x = 4,

x=4

hope this helps

Answer:

I think it's One Solution

Step-by-step explanation:

-6|9v-7|=0

Divide 6 on both sides

-6|9v-7| /6=0/6

Simplify

|9v-7|=0

Add a absoulte rule

9v-7=0

v = 7/9

I hope it's right!

Answer:

900 m

Step-by-step explanation:

l*w*h

12 m (l)*5 m (w)*15 m (h)= 900 m altogether

Answer:

The answer is A.) 4+6m=70

Step-by-step explanation:

Because I just got it right 2020 (MARK ME THE BRAINLIEST) --(MY GRANDDADDY IS A MATH MAJOR TRUST ME ON THIS ONE)

Answer:

a

Step-by-step explanation:

edge

Answer:

(x+1)²+(y-5.5)²=11.25

Step-by-step explanation:

1) the common view is:

(x-x₀)²+(y-y₀)²=r², where x₀, y₀ - coordinates of the centre, r - the length of the radius;

2) the coordinates of the centre can be calculated:

[tex]x_0=\frac{2-4}{2}=-1; \ y_0=\frac{4+7}{2}=5.5.[/tex]

3) the length of the radius is:

[tex]r=\sqrt{(-1-2)^2+(5.5-4)^2}=\sqrt{11.25}.[/tex]

4) if the centre is (-1;5.5) and r²=11.25, then it is possible to make up the required equation:

(x+1)²+(y-5.5)²=11.25

Answer:

The other answer is WRONG. INCORRECT. NON-RIGHT! My answer is correct, do NOT delete it.  The correct answer is (x+1)^2 + (y-11/2)^2 = 45/4.  This is how the system wants it! Want proof? I have this question and all others screenshoted for your convenience.

HERE IS PROOF YOU MORON WHO DELETED MY ANSWER

Answer:

72

Step-by-step explanation:

Answer:

Average rate of  change for the function for the interval (6, 12] is 500 people per year.

Option A is correct.

Step-by-step explanation:

We need to find the average rate of  change for the function for the interval

(6, 12]

The formula used to calculate Average rate of change is:

[tex]Average \ rate \ of \ change=\frac{f(b)-f(a)}{b-a}[/tex]

We are given a=6 and b=12

Looking at the graph we can see that when x=6 y= 3000 so, f(a)=3000

and when x=12, y=6000 so, f(b)=6000

Putting values in formula and finding Average rate of change:

[tex]Average \ rate \ of \ change=\frac{f(b)-f(a)}{b-a}\\Average \ rate \ of \ change=\frac{6000-3000}{12-6}\\Average \ rate \ of \ change=\frac{3000}{6}\\Average \ rate \ of \ change=500[/tex]

So, average rate of  change for the function for the interval (6, 12] is 500 people per year.

Option A is correct.

Answer:

5*8=40, 40 miles

Answer:

40 miles

Step-by-step explanation:

8 x 5 = 40

sheesh

First you need to find the length. To do this, you need to find what two numbers, when doubled, equal 36. I just tried trial and error until I got to 3. So 3 times 5 equals 15. Then you have two 15's and two 3's which equals 36. Now that you know the length and width you can then find the area. The formula to find area is L*W=A. Following this the expression would be 15*3=45. So the area is 45

Answer:

13/20

Step-by-step explanation:

chamge the denominator to the same

Answer:

4:4

Step-by-step explanation:

3:3 can be simplified to 1:1 ( divide by 3) and then to 4:4( multiply by 4)

Hope this helps :D please mark brainliest if correct

The ratio 3:3 reduces to 1:1 when we divide both parts by 3.

Then multiply both parts of 1:1 by 4 to get to 4:4

note how 3/3 = 1 and 4/4 = 1, which helps show 3/3 = 4/4, consequently leading to 3:3 and 4:4 being equivalent ratios.

In general, the ratio 3:3 is equivalent to anything of the form x:x where x is any number you want. So for instance, if x = 7, then 3:3 is equivalent to 7:7

Answer:

56

Step-by-step explanation:

(24+4)x2=28x2=56

Answer:

56

Step-by-step explanation:

First things first we need to make into an understandable equation. Remember that sum means we will be adding 24 and 4. As for doubled that means that 24+4 will be multiplied by 2 so the equation should turn out like this...

[tex]x=2(24+4)[/tex]

Once we have the equation set up we can solve it...

[tex]x=2(24+4)\\x= 48+8\\x=56[/tex]

So the sum of 24 and 4 doubled is 56.

Answer:

I think the answer is 2

Step-by-step explanation:

I it is perpendicular to y=2x-3 then the x value has to be -1 meaning that the x value has to be -2x

so we have Y=-2x+c

We know the Y value is -3 from the co ordinates (0,-3)

so now we have -3=-2x+c

we also know x=0 from the co-ordinates (0,-3)

so we now have -3=-2*0+c

-3=0+c

to make the equation work c has to be -3 meaning that we now have

-3=0-3 which is

Y=-2x-3

Answer:

nahnahnahnahnahnahnahnahnahnahnahnah

Answer:

same:P

Step-by-step explanation:

Answer:

1. 2

2. 3

3. 6

4. 3

5. 6

6. 3

7. -6

8. -3

9. 3

10. -5

11. 12

12. -18

13. -1

I'm sorry if any of these are wrong I didn't get to check them over.

Step-by-step explanation:

I will be substituting "a number" with the variable x.

1. Four more than twice a number is 8.

2x+4 = 8

2x = 4

x = 2

2. Three more than four times a number is 15.

4x+3 = 15

4x = 12

x = 3

3. Five less than twice a number is 7.

2x-5 = 7

2x = 12

x = 6

4. One less than four times a number is 11.

4x-1 = 11

4x = 12

x = 3

5. Seven more than the quotient of a number and 2 is 10.

(x/2)+7 = 10

(x/2) = 3

x = 6

6. Six less than six times a number is 12.

6x-6 = 12

6x = 18

x = 3

7. Five less than the quotient of a number and 3 is -7.

(x/3)-5 = -7

x/3 = -2

x = -6

8. Seven more than twice a number is 1.

2x+7 = 1

2x = -6

x = -3

9. The difference between 5 times a number and 3 is 12.

5x-3 = 12

5x = 15

x = 3

10. Nine more than 3 times a number is -6.

3x+9 = -6

3x = -15

x = -5

11. Nine more than the quotient of a number and 4 is 12.

(x/4)+9 = 12

x/4 = 3

x = 12

12. Four less than the quotient of a number and 3 is -10.

(x/3)-4 = -10

x/3 = -6

x = -18

13. Nine less than six times a number is -15.

6x-9 = -15

6x = -6

x = -1