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Naddika [18.5K]
2 years ago
9

4. Celina babysat for 5 hours and earned $27. what's her pay per hour?​

Mathematics
1 answer:
Elenna [48]2 years ago
6 0
Celina earns $5.4 per hour.
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Answer:

Step-by-step explanation:

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The amount of sales tax on a new car is directly proportional to the purchase price of the car. Victor bought a new car for $30,
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Answer:

Rita paid 47,500 dollars for the purchase price.

Step-by-step explanation:

We are given the sales tax on a new car is directly proportional to the purchase price of the car which means there is is something k such that

when you multiply it to the sales tax you get the purchase price.

Let's set this equation:

y=kx

Let y represent the purchase price and x the sales tax.

The second sentence tells us that (x,y)=(1500,30000).

We can plug this into y=kx to find the constant k.  (Constant means it stays the same no matter what the input and output is).

So we have:

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300    =k(15)      I went ahead and divided previous equation by 100.

Now divide both sides by 15:

300/15=k

Simplify:

20=k

So the equation to use the answer the question is

y=20x

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So we want to know the purchase price on a car if the sales tax is 2375.

So replace x with 2375:

y=20(2375)

y=47500

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Step-by-step explanation:

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surface area= perimeter x height + 2b

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