Answer:
Ok, the solution to the first one. See below.
Step-by-step explanation:

See attachment below.
Best Regards!
Answer:
84
Step-by-step explanation:
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Answer:
It would be Choice C, 12.4 feet.
Step-by-step explanation:
By using Pythagoras Theorem a² + b² = c²
c²- b²= a²
13²-4²=
169 - 16 = √153
√153 = 12.3693168769
12.3693168769 ≅ 12.4
Answer:y=-10
Step-by-step explanation:
y=-1/2 4(6(2)+3)-2y
+2y 6(2) +2y
3y=-1/2 4(12+3)
multiplie 4 times 12 and 4 times 3
3y=-1/2 48+12
add 48 and 12
3y=-1/2 60
divide -1/2 and 60
3y/3=-30/3
y=-10