Answer:
√71
Step-by-step explanation:
Simplify 42÷6 to 7
√64+7
Simplify 64+7 to 71
=√71
Answer:

First tangent line:

Second tangent line:

Notice: slope of -1 means that both
are equal to -1, so 
C. Plumber A and Plumber B will both charge $135 if they each work 2.5 h.
Answer: 40 cm ^2
Step-by-step explanation:
cuz math
AB ≈ ED ( corresponding sides )
∠A ≈ ∠D ( corresponding angles )
∠C ≈ ∠F ( corresponding angles )