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soldi70 [24.7K]
3 years ago
13

Someone please help me

Mathematics
1 answer:
olganol [36]3 years ago
8 0

Step-by-step explanation:

<h2>A^2 + B^2 = C^2 </h2>

A and B are the legs of the triangles.

C is the hypotenuse.

12^2 + x^2 = 20^2

144 + x^2 = 400

-144            -144

x^2 = 256

x = 16

The length of the second leg is 16.

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Show how to make ten to solve 13-7. Write in a number sentence. _-_-_-_-_=_
ser-zykov [4K]

Answer: The answer is 6.

The number sentence is

3-3=0

10-4=6

So, 13-7=6

Step-by-step explanation:

To solve 13-7, by making ten

First break 13 and write 13=10+3

Then break 7 as 7=3+4

Now to subtract 7 from 13,

Step 1. Subtract 3 (a part of 7), from 3(a part of 13) or cross 3 circles, then we have left 10-4

13-7=10+3-(3+4)=10+3-3-4=10-4

Step 2. Subtract 4 from 10 or cross 4 circles out of 10, we get 6.

The answer is 6.

5 0
3 years ago
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Mnenie [13.5K]

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I think the first step would be to

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Lastly you would

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I think your answer would then have to be...

x = 3 or x =  −1 /2

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3 years ago
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