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2 years ago

15

alex buys 12 DVDs.each DVD cost $15. if alex receives a $4 discount on each DVD, what is the total amount of money Alex spends?

write an expression that matches the words

1 answer:

KATRIN_1 [288]2 years ago

6 0

4×12=48
15×12=180
180-48=132
the answer is 132

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Answer:

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2 years ago

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Nadya [2.5K]

Answer:

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Jimmy Neutron is building a skateboarding ramp that is 16 inches high. The angle formed by the ramp and the ground is 21 degrees

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Answer:

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2 years ago

Which rule represents Ro, 180º?

Ksju [112]

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Step-by-step explanation:

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The highest point on the triangle, S, has coordinates of (3, 5).

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2 years ago

Read 2 more answers

Two similar circles are shown. The circumference of the larger circle, with radius OB, is 3 times the circumference of the small

zheka24 [161]

Answer:

The circumference of the smaller circle is:

C = 2*pi*x/3

Step-by-step explanation:

We know that for a circle of radius R the circumference is given by:

C = 2*pi*R

where pi = 3.14...

Here we have two circles, A and B, where B is the larger circle and A is the smaller circle.

We know that:

The circumference of B is 3 times the circumference of A.

The radius of circle B is: OB = x

The radius of circle A is: OA

We want to find an expression of OA.

The circumference of circle B will be:

C(B) = 2*pi*OB = 2*pi*x

The circumference of circle A will be:

C(A) = 2*pi*OA

And we know that the circumference of circle B is 3 times the circumference of circle A, then:

C(B) = 3*C(A)

replacing the equations for the circumferences, we get:

2*pi*x = 3*(2*pi*OA)

dividing both sides by 2*pi, we get:

x = 3*OA

Now we want to solve this for OA, then we need to isolate it,

x/3 = OA

We can conclude that the radius of the smaller circle is equal to x/3.

Then the circumference of circle A is:

C(A) = 2*pi*x/3

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2 years ago