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shusha [124]
3 years ago
12

Can some one help me this please

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0
Step by step explanation:


5X4=20
£20 for 5 hours
£20+£12=£32

Hope this helped!
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Bob is trying to decide between two cell phone plans. Plan A has no flat fee, but the user must pay $10 cents per minute on the
professor190 [17]
$ per min is a rate. you multiple by minutes to get dollars.

A = 10x
B = 5x + 20

set them equal to find minutes, x.

10x = 5x + 20
10x - 5x = 20
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x = 4
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3 years ago
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The perimeter of a picture frame is 68 inches. The difference between the length of the frame and th
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Answer:

L - W = 2 and 2L + 2W = 68

Step-by-step explanation:

The two equations here are going to be-

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L - W = 2

And

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2 years ago
Suppose a population of 250 crickets doubles in size every 3 months. How many crickets will there be after 2 years?
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3 years ago
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The circumference of a circle is 11 pi inches.
ser-zykov [4K]

9514 1404 393

Answer:

  30.25π square inches

Step-by-step explanation:

You can use the formula for area in terms of circumference:

  A = C²/(4π)

  A = (11π)²/(4π) = (121/4)π = 30.25π . . . square inches

_____

You may be expected to find the radius first:

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Then use the area formula:

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8 0
3 years ago
If 3 is added to twice a number, the result is 17. Find the number
Crank

Answer:

7

Step-by-step explanation:

The text of this expression is:

"If 3 is added to twice a number, the result is 17. Find the number"

Let's call x the number we want to find.

Twice the number is equal to

2x

So, if we add 3 to 2x, we get

3+2x

And we know that this is equal to 17:

3+2x=17

Now we can solve the equation to find x: first, we subtract 3 from both sides

3+2x-3=17-3\\2x=14

Now we divide both sides by 2:

\frac{2x}{2}=\frac{14}{2}\\x=7

7 0
3 years ago
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