Answer8 hours
Step-by-step explanation:
Answer:
2x + y = 20
Step-by-step explanation:
gradient = -2
x = 6, y = 8
y - 8 = -2(x - 6)
y - 8 = -2x + 12
2x + y = 12 + 8
2x + y = 20
Answer:
5 seconds
Step-by-step explanation:
When the ball returns to its original height, it will be 96 ft from the ground. That means we want to solve for t ...
h(t) = 96
96 +80t -16t^2 = 96
16t(5 -t) = 0 . . . . subtract 96 and factor
This equation is true for t=0 and for t=5.
After 5 seconds, the ball will pass the top of the building on the way down.
11/90 hope this helps please give brainliest
<h3>
Answer: 1.28544 x 10^5 (ten to the 5th power)</h3>
Step-by-step explanation:
4 x 103 = 412, 3 x 104= 312
412 x 312 = 128,544
number has to be between one and ten and show significant digits. the decimal has to be moved five tome to the left creating the number 1.28544. to move the decimal back you have to multiply by 10 to the 5th power. Yielding 1.28544 x 10^5
