145 = -16 t² + 80 t +s
s = ?
v = v0 - at
0 = 80 - at
80 = at
s = 80 t - at²/2
s = 80 t - 80t/2
s = 40 t
Finally: 145 = -16 t² + 80 t + 40 t
16 t² - 120 t + 145 = 0
We will solve this quadratic equation:
t = [120 +√ ( (-120)²- 4 · 16 · 145 )] / 32
t = [120 + √ (14400 - 9280) ] / 32
t = (120 + 71.55) / 32 = 5.98 ≈ 6 s
Answer:D) 6 seconds
Hi!
We will solve this using rations, like this:
$920 equals to 115% = 1,15
$x equals to 100% = 1
_______________________
x = (920*1)/1,15
x = 920/1,15
x = 800
Store earned 15%, or in this case 920 - 800 = $120.
Hope this helps!
Answer:
The answer is D
Step-by-step explanation:
Since the input is -6, you input it into the equation. That would make it f(-6)=-(-6)-1 which would be equivalent to f(-6)=6-1 , as the negatives at the beginning of the equation cancel each other out and make it positive. Then you solve and get 5, which is your output. Hope I could help :)
Answer:
Zak: 1 43/50
Fred: 1 3/5
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
(y^3 * 2^5)^2
3x2=6
5x2=10
y6x2^10
