Answer:
250 m/min
Step-by-step explanation:
500 m / 2 min = 250 m/min
You can re-write this quotient this way :

What's inside the square root must be greater than or equal to 0, because the domain of the square root function is defined on R+ (which is [0,+∞))
In other word we must find x so that :

at the end we get
28(x-1) ≥ 0
28x - 28 ≥ 0
28x ≥ 28
x ≥ 1
So the answer is B, x ≥ 1
It would be basically 2.12 because once you divide it your answer will be that
Answer:
r = 0.5 and 5.25
Step-by-step explanation:
The common ratio r of a geometric progression is the ratio of a term to the one before it, that is
(a)
r = 42 ÷ 84 = 0.5
(b)
To obtain a term in the sequence multiply the previous term by r, thus
a₅ = 10.5 × 0.5 = 5.25