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3 years ago

William bought 5 rulers for $7.50. If r represents the cost of one ruler, which equation represents this situation?

Mathematics

1 answer:

kkurt [141]3 years ago

3 0

Answer:

5r = 7.50

Step-by-step explanation:

As, the cost of 1 ruler = r

So, r times 5 ruler will give u the cost of 5 rulers, which is 7.50

So, 5r = 7.50

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5.2x+8+2.1x-3 which is an equivalent expression by combining like terms A. 5.2x+8+2.1x-3 B. 5.2x+5+2.1x C 13.2x-0.9x D 7.3x+5

satela [25.4K]

Answer: 7.3x + 5

Step-by-step explanation:

For us to solve the question, we have to solve 5.2x+8+2.1x-3 and the answer gotten will allow us know the equivalent expression.

= 5.2x+8+2.1x-3

= 5.2x + 2.1x + 8 - 3

= 7.3x + 5

Therefore, the correct answer is 7.3x + 5

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3 years ago

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alisha [4.7K]

Answer:

the correct answer is W(3_4)

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What is -1/2 x 1/2 in the simplest form possible?

timurjin [86]

-1/2 x 1/2 = -1x1 / 2x2 = -1/4

The answer is -1/4

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3 years ago

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What is the volume of the prism?

babymother [125]

The volume of the prism is 1782

To find volume use base times height

To find base, use the triangle's area

The area of the triangle is 1/2(8×19) = 162

162 is the base amd the height is 11 so do 11 times 162

You should get 1782 as your answer

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3 years ago

What is the approximate solution to this equation?

Nookie1986 [14]

Answer:

C. x ≈ 0.28

Step-by-step explanation:

A graphing calculator solution is attached. It shows ...

x ≈ 0.28

You can divide both sides of the given equation by 5, then take natural logs and divide by 5 again.

5e^(5x) = 20 . . . . . . given

e^(5x) = 4 . . . . . . . . divide by 5

5x = ln(4) . . . . . . . . take natural logs

x = ln(4)/5 . . . . . . . divide by 5

x ≈ 0.277259 ≈ 0.28

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3 years ago