Answer:
step 3: he should have divided both sides by -7
8/100 * 125 =
(125 * 8)/100 =
1000/100 =
10
$125 + $10 = $135
Answer: B. $135.00
April mows 4/8 of an acre of grass per hour
I got this answer because I divided 45÷3 and got 15. So, I know that 15×4=60 and in minutes that equals a hour. I changed 3/8 to 4/8 since it was multiplying 4×15 instead of 3×15.
Answer:

Step-by-step explanation:
By definition, the derivative of
is given by:

Given
,
must also be
. Therefore, we have:

Note that the derivative of a constant is always zero since for
, where
is some constant,
and we obtain
in the numerator, yielding a final answer of zero.
Answer:
Upstream = 0.5 hour.
Downstream = 0.366 hour.
Step-by-step explanation:
Speed of fram in still water (u) = 2.6 mph.
Speed of water (v) = 0.4 mph .
<h3>Time taken by fran to swim 1.1 mi upstream.</h3>
Speed upstream = u - v = (2.6 - 0.4) mph = 2.2 mph
So the time taken =
= 0.5 hour.
<h3>Time taken by fran to swim 1.1 mi downstream.</h3>
Speed downstream = u + v = (2.6 + 0.4) mph = 3 mph .
So the time taken =
= 0.366 hour .
<h2 />