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Andrews [41]
2 years ago
10

A group of students organized a car wash to raise money for a local charity. The students charged $8.00 for each car they washed

. In 4 hours, they washed 16 cars. At that rate, how much money could they earn from washing cars for ten hours?
Mathematics
2 answers:
faust18 [17]2 years ago
6 0

Answer:

$320

Step-by-step explanation:

They charged &8.00 for each car. In 4 hours they washed 16 cars. This averages to 4 cars every hour. If they did this for 10 hours then you would multiply 10 by 4. That would equal 40 cars in total. If you multiply 40 by 8 you get 320

Hope this helped everyone:)

3241004551 [841]2 years ago
3 0

Answer:

$320

Step-by-step explanation:

First, we can find how many cars they washed.

At 8 hours, they washed 32 cars, and since you still have two hours worth of cars to find, you can divide 16 by 2, and you get 8.

So in total, they washed 40 cars.

Now, you can multiply 40 by $8.00, and you get $320.

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The points (4,- 4) and (4,- 6) lie on a circle with a radius of 1. Find the center point of the circle.
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If we intersect the circle of radius 1 around (4,-4) and the circle of radius 1 around (4,-6) they'll intersect at the center of circle radius 1 that has both those points.  

Here we don't really have to do any math.  It's clear that the midpoint (4,-5) is 1 away from both (4,-4) and (4,-6) so that's our answer:

Answer: (4,-5)

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3 years ago
The cost of 100 mechanical pencils is $42.60. The cost of 100 colored pencils is $32.60. How much more does one mechanical penci
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Step-by-step explanation:

First find the unit rate of each item.

$42.60 divided by 100= 0.426

$32.60 divided by 100= 0.326

Then find the difference

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3 0
3 years ago
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The sum of two binomials is 3z-6. If one binomial is z+4, what is the other binomial?
Viefleur [7K]
The answer is 2z-10. Hope it helps.
4 0
3 years ago
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mark and heather starr are celebrating their 25th anniversary by having a reception at local reception hall. they have budget 45
Lera25 [3.4K]

Answer:

Step-by-step explanation:

The $50 cleanup fee is a "fixed cost."

The "$30 per-person fee is a "variable cost."  That is, it varies with the number of people.

 

"within"  means "less than or equal to"

 

Cost = $50 + $30x       [where x = number of people]

 

Cost ≤  $4500              ["stay within their budget"]

$50 + $30x ≤ $4500           [substitute for cost]

 $30x ≤ $4450      [subtract $50 from both sides retains sense of inequality]

   x ≤ 148.3333     [divide by +$30 retains sense of inequality]

 

Mark and Heather may invite up to 148 guests.

     [note:  to be "≤," always truncate, never round up]

 

Check:

 148 people for $30 each + $50 is $4440+$50 = $4490.

One more person makes it $4520 -- that is too much.

There we go, my bad

4 0
3 years ago
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