The radius is half the diameter, so the diameter of the circle would be the radius times 2.
1.9*2=3.8
The diameter is 3.8.
<h3>2
Answers: Choice B, Choice C</h3>
The rule we use here is
If the font size is too small, then it says (a^b)/(a^c) = a^(b-c)
We subtract the exponents when dividing exponentials like this. The bases must be the same.
So this means the exponents 13 and 3 subtract to get 13-3 = 10
We either have an exponent of "13-3" or an exponent of "10" as an equivalent expression. The base stays at 2 the entire time.
The mathematical statement is Theorem
First we can divide 12,000 by 10 to get 10% of it: 1,200.
Then we multiply it by 4 to get 40%: 4,800.
Next we add 12,000 to 4,800: 16,800.
He spent $16,800 on advertising during the second year, hope this helps!