Answer:
153.86
Step-by-step explanation:
7^2 x 3.14
Answer:

Step-by-step explanation:
For each right-angled triangle:

Because 
we have an equation

multiplying both sides by x, we get 
dividing both sides by 0.4 and 
using calculator, we divide 12 by 0.4
and finally x=30
Opposite but I’m not very sure
Answer:
true
Step-by-step explanation:
-7=4*-3+5
-7=-12+5