Answer:

Step-by-step explanation:
<u><em>The correct question is</em></u>
If b = 9 and c = 13, what is the measure of ∠A? (round to the nearest tenth of a degree)
The picture in the attached figure
we know that
In the right triangle ABC
---> by CAH (adjacent side divided by the hypotenuse)
substitute the given values

using a calculator

Answer:
Sale Tax($): 4.5
Step-by-step explanation:
Before Tax Price ($): 72
Tax Rate (%):
6.2
Final Price Including Tax ($): 76.46
Sale Tax($):
4.46
Answer:
x= 3 inch should be turned up on each side
Step-by-step explanation:
Let the height of trough be x.
Width of trough be 12 - 2x.
and length of trough = 120 inch
Volume of trough, V = L×W×H = 120 × (12-2x) × x = 120x(12 - 2x)
For maximum volume, we find V' = 0
i.e 1440 -480x = 0
or x =
or x= 3
Hence x= 3 inch should be turned up on each side
Answer:

Step-by-step explanation:
The lab technician is dividing a cell that has a diameter of

The new cells has a diameter that is half of the diameter of the original cell.
The diameter of the new cell is given as:

Rewrite the numerator in standard notation:


We rewrite in scientific notation to obtain:
