Answer:
t = 0.35 seconds
Step-by-step explanation:
We have given the equation:
d=1/2gt²
where,
g = 9.8 m/s²
d = 0.6 m
t = ?
Now put the values in the given formula:
d*2/g = t²
0.6*2/9.8 = t²
1.2/9.8 = t²
0.12245 = t²
Now find the square root of both sides
√t² = √0.12245
t = 0.35 seconds
Answer:
(A) The rate of change is 5
(C) The rate of change is 4/1
(D) The plant grows 4 cm in 1 week
Step-by-step explanation:
just got it right on edge
For this case, what we must do is calculate the speed of the runner.
We have then that the speed is given by:
Where,
d: distance
t: time
Substituting values we have:
Answer:
the runners unit rate is:
The original number is 7 i think.
10(x^2) = 70x
10x^2 - 70x = 0
x^2 -7x =0
Δ= b^2 -4ac
where c doesnt exist=0
Δ= 49
-b ± √Δ /2a
7 ± √49 /2
7±7/2
x is either 14/2= 7
or 1/2, which doesnt work.
Lets see:
10(7^2) = 70•7
10•49 = 490
and that is right.
i hope my logic is correct.
