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devlian [24]
3 years ago
13

Suppose that 15 inches of wire costs 45 cents. At the same rate, how many inches of wire can be bought for 24 cents?

Mathematics
2 answers:
Tanzania [10]3 years ago
6 0

Answer:

8 inches

Step-by-step explanation:

We can use proportions to solve this problem.  Take the inches over the money.

15 inches        x inches

--------------- = -----------

45 cents          24 cents

Using cross products

15*24 = x *45

Divide each side by 45

15*24/45 = x*45/45

8 =x

You can buy 8 inches

Darina [25.2K]3 years ago
5 0

Answer:

8 inches of wire for 24 cents

Step-by-step explanation:

Simplify. Find the amount it costs for 1 inch of wire. Divide 45 with 15:

45/15 = 3

1 inch of wire costs 3 cents.

Now, solve for the the amount of wire (x) you can get for 24 cents

(1/3)(8/8) = (x/24)

1 x 8 = 8

3 x 8 = 24

x = 8

8 inches of wire for 24 cents

~

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Answer:

4x^2+19x-5=(x+5)(4x -1)

Step-by-step explanation:

The given expression is 4x^2 + 19x - 5

The leading coefficient is 4 and last term is -5

Multiply them, we get -20

Now find the factors of -20 such that when you add the factors we have to get 19.

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The right factors are -5 and 9.

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= (x + 5)(4x -1)

The missing factor is (4x -1)

Thank you.


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Hello There!

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