Answer:
It takes her 25.2 mintes
Step-by-step explanation:
You can just multiply 21 by 1.2 because that's how long she takes per lap and you can get 25.2
Answer:
A
Step-by-step explanation:
6 is less than 14 obviously.
4 x 10^-7 (7 x 10^-9) (1 x 10^4) (2 x 10^4)
Answer:
$6.45
Step-by-step explanation:
$21.50-$15.05=$6.45
Consider inequality
This inequality is equivalent to inequality 
This means that 
The greatest integer number n, such that
when dividing by 7 gives the remainder 4 is 39. Then subtract 7, you get 32, then 25 and so on.
When n=-39, -32, -25, -18, -11, -4, 4, 11, 18, 25, 32, 39 then dividing by 7 the remainder is 4.
Answer: 12 integers.