Answer:
b=15
Step-by-step explanation:
7(b+1)=2*56 (we cross multiply)
7b+7=112
7b=105
b=15
Easily, take the square root of the number in the right side to find the radius

is the answer
Answer:
B a = 180 -77-60
Step-by-step explanation:
The angles add to 180 degrees since they form a straight line
77+ 60+a = 180
a = 180 -77-60
Answer:
im too immature for this lol...9. the answer is 9 inches
Step-by-step explanation:
9+9=18
18+8=26
21 blocks, because if he uses 38 you subtract 17 and you get 21