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Mama L [17]
3 years ago
9

How to do this problem

Mathematics
1 answer:
Maslowich3 years ago
3 0

Answer:

1 tens   3 ones

Step-by-step explanation:

All you do is count the numbers in the place value chart.

Since 31-18=13, all you do is count 10+1+1+1=13.

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1. Find the area of the given circle. Round to the nearest tenth. *theres a picture of a circle and the radius is 3.5*
Alexandra [31]
I hope this helps you



area formula=pi.r^2


1) Area=3,14. (3,5)^2


Area=38,465


Area nearest 38,5


2) Circumference=2pi.r


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Circumference=21,98


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7 0
4 years ago
PLEASE ANSWERERRREEERRR
Vladimir79 [104]

the operation:

2*10^1 - 4*10^0 = 20 - 4 = 16

Gives a square number.

<h3>How to get a perfect square?</h3>

A perfect square is the product of a number and itself.

As you can see in the example, 16 is a square number. Then let's try to get 16.

To get 16 we can use the difference:

20 - 4

So the first therm needs to be equal to 20, and the second equal to 4.

To write 20 in scientific notation we have:

2*10^1

To write 4 in in scientific notation:

4*10^0

Then the operation:

2*10^1 - 4*10^0 = 20 - 4 = 16

Gives a square number.

If you want to learn more about square numbers:

brainly.com/question/21694652

#SPJ1

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Answer:

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