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Andre45 [30]
3 years ago
11

A video store is running a closeout special of 5 DVDs for $15. If the store has 42 different titles in the closeout section, how

many different
combinations of 5 DVDs can be purchased?

Mathematics
1 answer:
Elenna [48]3 years ago
4 0

Answer:

C. 850,668

Step-by-step explanation:

Since order doesn't matter, we use the combination equation: nCr

We first need to find n, which would be 42. Then we find r, which is 5.

We plug them into either the equation or a calculator

(42!)/(5!(42-5)!) = 850,668

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Answer:

B

Step-by-step explanation:

The equation is Y = mx + b so just plug in the m and the b

6 0
4 years ago
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B is the midpoint of AC. AB = 2x+12 and BC = 5x + 10. Find AC
3241004551 [841]

Answer:

x=6

Step-by-step explanation:

/AB/=2x+12

/BC/=5x+10

3x+2=5x-10 subtract 2 from both sides

3x=5x-12 subtract 5x from both sides

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2 years ago
Solve for n.<br> 3/4 x n = 1
cestrela7 [59]
3/4 times n=1

remember that when you multiply 3/4 by 4/3 you get 12/12=1 so it simplifies
remember that you can do anything to an equation as long as you do it to both sides

3/4 ties n=1
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3 0
3 years ago
Suppose h(t) = -4t^2+ 11t + 3 is the height of a diver above the water in
nadezda [96]

Answer:

11/4 seconds

Step-by-step explanation:

We can see from the given equation that the height at the diving board is h = 3.

This is because the h(t) equation has that +3 at the end, which denotes the initial height of the diver, the height when he is standing on the board before jumping.

To find where h(t) = 3 is true, we need to set h(t) equal to 3 and solve for t.

h(t) = 3

h(t) = -4t^2 + 11t + 3 = 3

-4t^2 + 11t + 3 - 3 = 0

-4t^2 + 11t = 0

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so h(t) = 3 when t = 0 and when t = 11/4 sec

we already know that at t = 0 the height is 3, it is the initial height given from the equation, so we want to use the other solution for t.

the diver is back at the height of the diving board at t = 11/4 sec

6 0
3 years ago
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Explain how to estimate 498÷12
PSYCHO15rus [73]
498 is approximately 500

12 is approximately 10



500/10 = 50



So, 498/12 is approximately 50.
8 0
4 years ago
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