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galben [10]
3 years ago
10

Please helpp, thank youuu.

Mathematics
2 answers:
Morgarella [4.7K]3 years ago
5 0

Answer:

b=16

Step-by-step explanation:

Mariulka [41]3 years ago
4 0

Answer:

16ft

Step-by-step explanation:

use pythagreom thereom

12^2+b^2=20^2 solve

144+b^2=400

b^2= 256 square it

b= 16

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Read 2 more answers
Problem in image. Explain it too.
alexandr1967 [171]

\sqrt{40}  = 6.32\\\\\\or\\5\sqrt{15} \\\\

this is because when 40 is broken down into two numbers (one divisible to get out of the square root, and one not) you get 25 + 15 under the square root. we know that the square root of 25 is 5, so we can put 5 outside the root and leave 15 inside.

-------------- try the next problem, and if you don't understand, please reply back.

answer is for a) 5\sqrt{15}

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