Answer:
11.4
Step-by-step explanation:
l²+w²=d²
81+49=130
√ 130
11.40175425099138
11.4
I don't understand life anymore....
Answer:
Lisa will need
of wood framing
Step-by-step explanation:
we know that
The perimeter of rectangle is equal to

In this problem we have


convert to cm
Remember that 

substitute the values and solve the perimeter

The answer is B.
Function means every x corresponds to one unique y value. ACD all have duplicates correspondence.
Child=x
Adult=y
y=3x
5.2x+9.9y=767.8
5.2x+9.9(3x)=767.8
5.2x+29.7x=767.8
34.9x=767.8
x=22