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3 years ago

HELP ME PLEASE!!! I DON'T UNDERSTAND!

Mathematics

2 answers:

krek1111 [17]3 years ago

7 0

Answer:

I believe that the answer is 12 but find someone who knows for sure.

Rama09 [41]3 years ago

3 0

Answer: 12

Step-by-step explanation:

this is a right angled triangle so you use the pythagorean theory

which is a^2 + b^2 = c^2

you have c and b already. c is the hypotenuse.

a^2 + 16^2 = 20^2

a^2 + 256 = 400

a^2 = 400 - 256

a^2 = 144

then you square root 144 and get..

a = 12

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