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Citrus2011 [14]
2 years ago
13

You earn $28 for washing 4 cars. How much do you earn for washing 3 cars?

Mathematics
2 answers:
a_sh-v [17]2 years ago
8 0

Answer:

21 dollars

Step-by-step explanation:

vfiekz [6]2 years ago
8 0

Answer:

$21

Step-by-step explanation:

Make the original statement into a ratio.

$28/4

Simplify the fraction above.

$28/4 = 7

So, you earn $7 per car you wash.

As a result, you multiply $7 by the number of cars the question is asking you for. In this case it is 3 cars.

So, you multiply 7 x 3

7 x 3 = 21

Therefore, you will earn $21 for washing 3 cars.

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\bold \pink{let \: the \: number \: be \: x}

\mathsf{128\% \times x = 75}

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A father is 38 years old. his sons are 13 and 5 years old, and his daughter is 8 years old. In how many years will the father be
nalin [4]

Answer:

6 years

Step-by-step explanation:

So each person's age can be represented as a linear equation, since each year our age increases by 1. It can be represented in the slope-intercept form: y=mx+b. The slope in this case is going to be 1, since the time is going to be years, and each year everyone's age goes up by 1 (of course if you're still alive...) and y-intercept in this case represents their current age.

So the father can be represented as: y=x+38

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The daughter can be represented as: y=x+8

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1 year ago
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