200,000,000+40,000,000+9,000,000+100,000+4,000+300+30= 249,104,330
b.
0.22(100)=22.0
we have to move the decimal point twice to the right to get a percent!
You put the decimal over a number with one more digget. if the number was .66 you would make it 66/100 if the number was .777 you would make the fraction 777/1000
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:
answer is 29524 using formula. (a(r^n-1))/r-1