Answer: +19
Step-by-step explanation: In this problem we are asked to evaluate 9 - (-12).
To subtract these integers, it's important to understand that when we have minus a negative, we can change it to plus a positive.
So 9 - (-12) can be changed to 9 + (+12) or 9 + 12 which gives us a sum of 21.
Therefore, 9 - (-12) = +21.
Notice that I put the '+' sign in front of the 21. Although this is optional, it's a good idea to do especially when adding and subtracting positives and negatives. All it shows is that our answer is positive.
Answer:
Step-by-step explanation:
The formula of an area of a circle:
r - radius
Circle A:
radius = 4 ft. Substitute:
Circle B:
radius = 9 ft. Substitute:
The ratio:
42.081 * 99.91 ≈ 42 * 100 ≈ 4200
<span>C) 4200</span>
Answer:
im pertty sure $740
Step-by-step explanation:
The equation would be y=12000(2)ˣ.
This equation is of the form y=a*bˣ, where a is the initial population and b is the rate that it increases by. In this problem, a = 12000 and b=2, since it doubles each time.