Someone answer number 10.(Both parts please.)
1 answer:
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Answer:
.
Step-by-step explanation:
The person in this question is in the air whenever the height is greater than .
The graph of is a parabola opening downwards. Rearrange and find values of
that would set this expression to
.
.
The first factor, , suggests that
would set this expression to
- quite expected, since the person is on the ground right before jumping.
The second factor, , suggests that
(in other words,
) would also set this expression to
. Hence, this person would be once again on the ground
seconds after jumping.
Hence, this person is in the air between and
for a total of
.
Answer:
Step-by-step explanation:
Hello
I believe there is an error in the question
we have two equations and need to find x and y
let s multiply by 8 so that we can get rid of the fractions
(1) becomes 2x+4y=5
(2) becomse 6x-4y=9
if we sum it gives
2x+4y+6x-4y=9+5
8x=14
x = 14/8 = 7/4
and then from the first equation
4y = 5 - 7/4
<=> 16y = 20-7 = 13
y = 13/16
the solutions is (7/4,13/16)