* J,K,&L are coplanar
* K is the midpoint of JL
* J,K,&L are collinear
* Jk=KL
Answer:
The muscular work completed by four men will be 2400 ft. lbs.
Step-by-step explanation:
See the diagram of the ramp.
Four men carry 20 boxes each up a ramp as shown.
So, 4 men carry total (4 × 20) = 80 boxes up the ramp and each box weighs 5 pounds.
Then, the 4 men carry total (80 × 5) = 400 lb weight up the ramp.
Now, the vertical height of the ramp from the ground level is 6 ft.
Hence, the muscular work completed by four men will be (400 × 6) = 2400 ft. lbs. (Answer)
Answer:
Step-by-step explanation:
Notice when x increases 1, y is 4 times the previous one, so
the function is like 
To determine the constant C, put any pair of (x, y)
Use x = 0, y = 0.2, so
0.2 = 
= C * 1 = C
then
Answer:
x+9
Step-by-step explanation:
if you expand...you could get x+9, which is the same as the given expression
