20,000 would be the answer
9^-2 = 1/81 or 0.0123
When there is a negative in front of the exponent it makes a fraction. It is usually just 1/the number it equals if it were positive.
12 2 +16 2 = D2
D2= 144+256
D2= 400
D2= 400
Answer:
Suzie's speed was 3.6 mph
Step-by-step explanation:
we know that
The speed is equal to divide the distance by the time
Let
s ----> the speed in mph (miles per hour)
x ----> the distance in miles
y ----> the time in hours
so

Find Suzie's speed
we have


substitute

Convert mixed number to an improper fraction

substitute

Hey there!
We can condense 18 to 9 times nine. However, 9 isn't prime, so we can break that down to 3 times 3 times two, all of which are prime.
Hopefully this helps!