Answer:
OPTION A .
A.144 PLEASE MARK BRAINLEST
Answer:
t=6
Step-by-step explanation:
ground height = 0
(are you sure your formula is correct? isn't it - 16t²?)
if h=16t² +64t+192 is true then
16t² +64t+192 = 0
t² + 4t + 12 = 0
t = (-4 ± √(4² - 4*12)) / 2*1 = (-4 ± √-32) / 2 = -2 ± 2√-2
There is no solution of t
if it is h= - 16t² +64t+192
0 =- 16t² + 64t + 192
t² - 4t - 12 = 0
(t + 2) (t -6) = 0
t should be positive
t = 6 sec
Answer:
x=-1 1/4
Step-by-step explanation:
Answer:
-32x + 24y
Step-by-step explanation:
4(-8x + 6y) ⇒ -32x + 24y
Okay, so FIRST you would subtract 215 - 155, which is 60, and THEN
divide it by 215, so 60 divided by 215 = 0.27, and rounded that is 0.28,
then you move the decimal two places to the right to make it a
percentage so your answer would be A., 28%
I hope I helped! =D
