Answer:
9 pieces represent 3/ 4 because
3/4 × 12 parts = 9 parts
mark me as brainliest
Step-by-step explanation:
15^2-12^2
225-144
81
√81=9
21÷9=2.3333(recurring)
2.33333×15=x
X=34.999
or X=35 to 1 d.p
First set up the equation:

+

Now solve the ones in the parenthesis:

+

Then do the exponents:
25+64
The answer will be:<u> </u>
<u>89
</u>Hope this helps!
<u>
</u>
Here are the answers:
1) C
2) A
3) D
4) B