Answer:
785.398 ft
Step-by-step explanation:
Circumfrence = pi * diameter
Answer:
the first one
Step-by-step explanation:
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x
Answer:
t(h)= (h-200)/-4.9
The time to reach a height of 50 meters is 30.6 seconds
Step-by-step explanation:
To express t as a function of height (h) we must transform the equation below:
h=200-4.9t
h-200=-4.9t
(h-200)/-4.9=t
t(h)= (h-200)/-4.9
To find the time to reach a height of 50 meters, we must replace this value on the new equation:
t(h)=50-200/-4.9
t(h)= 30.612
The time to reach a height of 50 meters is 30.6 seconds
angles a and b are supplementary because they form a straight line
