Answer:
Step-by-step explanation:
Given
Required:
Determine the time taken to return to the ground
From the equation given; height (h) is a function of time (t)
When the rocket returns to the ground level, h(t) = 0
Substitute 0 for h(t) in the given equation
becomes
Solve for t in the above equation
Factorize the above expression
Split the expression to 2
Solving the first expression
Divide both sides by -4
Solving the second expression
Add 30 to both sides
Divide both sides by 4
Hence, the values of t are:
and
shows the time before the launching the rocket
while
shows the time after the rocket returns to the floor
Answer:
1/2n+3=15
Step-by-step explanation:
the 1/2 is a fraction so 3 more than 1/2 times n is 1/2n+3=15
Answer:
c.
Step-by-step explanation:
c is the only shape on here with acute angles, the top and bottom bases are parallel w/ each other
Ok, so it seems
erm
ok, even and odd
it is an odd one because the power is odd (3rd degree)
so then the ends go in different directions
and since leading coefient (5 in the 5x^3) is positive, it goes from bottom left to top right
so
A is false
B is false
C and D are true
answer is C and D
Answer:
maybe there's a typo, that dot usually represents the multiplication, and I got 5.52