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Ratling [72]
4 years ago
10

Solve the equation show your work 4/a=5/100

Mathematics
1 answer:
Ivahew [28]4 years ago
7 0

cross multiply the two numbers.

4x100=400

5xa=5a

now set them equal to each other

400=5a

Divide 5a on both sides you get 80.

a=80

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The shelf should sell for $235.20.

Marking the price up by 60% means taking 160% of the cost:
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3 years ago
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Dan earns £7.50 per hour. How much will he earn for 5 hours work?
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solve 3x+2y=16 and y=x+3 using substitution. Find the ordered pair. Please show all the steps taken to find the answer.
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Answer:

(2,5)

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substitute y =x+3 every place  you see a y

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distribute

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combine like terms

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subtract 6 from each side

5x+6 -6 =16-6

5x =10

divide by 5

5x/5 = 10/5

x = 2

now we need to find y

y = x+3

y = 2+3

y=5

(2,5)

or x=2, y=5

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3 years ago
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How many equal parts does a ruler have? ​
svetoff [14.1K]

Answer:

-inch distance on Ruler B is divided into two equal parts.

Step-by-step explanation:

7 0
3 years ago
Evelyn borrowed $30 from her mother to buy a sweater. After 3 weeks of babysitting, she pays her mother back $24. ​ What percent
Goryan [66]

Answer:

80%

Step-by-step explanation:

We know that Evelyn paid off $24 of the $30. To find the percentage, we divide the part by the whole and then multiply by 100. The multiplying by 100 is optional, but it just makes the calculation easier. In this case, the part is 24 and the whole is 30, so our expression would be \frac{24}{30} * 100, or 80%. Hope this helps!

6 0
4 years ago
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