Answer:
23
Step-by-step explanation:
7^2=a^2+4^2
49-16=a^2
√23=a
Answer:
no
Step-by-step explanation:
Proportional must go through (0,0)
0 = 2(0) +7
0 = 7
This is not true so this is not proportional
0.026 add all of them up then divide them that should be your answer
E maybe not certain that it is correct, hope it helps even tho i might be wrong