Answer:

Step-by-step explanation:
we know that
the formula to calculate the distance between two points is equal to

we have
(4,2) and (7,8)
substitute the values in the formula




Answer:
Inclined plane= 1st option
Wheel and axle= 2nd option
Wedge= 5th option
Pulley= 3rd option
Lever= 4th option
Answer: x=3
Step-by-step explanation:
hope it helps!