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Tom [10]
3 years ago
14

If the sum of two numbers is 280, and their ratio is 7:3, then the smaller number is?

Mathematics
1 answer:
skad [1K]3 years ago
6 0

7+3=10

10 units=280
divide by 10
1unit=28

smaller is 3 units
1unit=28
times 3 both sides
3unit=84

smaller is 84

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A cyclist estimates that he will bike 80 miles this week. He actually bikes 75.5 miles. What is the percent error of the cyclist
maw [93]

Answer:

<em>The percent error of the cyclist's estimate is 5.63%</em>

Step-by-step explanation:

<u>Percentages</u>

The cyclist estimates he will bike 80 miles this week, but he really bikes 75.5 miles.

The error of his estimate in miles can be calculated as the difference between his estimate and the real outcome:

Error = 80 miles - 75.5 miles = 4.5 miles

To calculate the error as a percent, we divide that quantity by the original estimate and multiply by 100%:

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Rounding to the nearest hundredth:

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5 0
3 years ago
If Jill is selling lemonade for $1.50 per cup on Tuesday. On Wednesday she is selling the lemonade for the same price and sells
Molodets [167]

Answer:

Jill make $18 on Wednesday

Step-by-step explanation:

Given :Jill is selling lemonade for $1.50 per cup on Tuesday.

To Find :On Wednesday she is selling the lemonade for the same price and sells 12 cups. How much money did she make on Wednesday?

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Jill is selling lemonade for $1.50 per cup on Tuesday.

Cost of 1 cup of lemonade = $1.5

Cost of 12 cups of lemonade = 1.5 \times 12 =$18

Hence She make $18 on Wednesday

4 0
3 years ago
Over the summer, Janice spent 120 hours reading. She
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Answer:

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Expresión factorizada <br> 12abxyz - 3xyz - 4 ab + 1
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Step-by-step explanation:

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