D. (xy2 + 3z14)(x2y4 – 3xy2z14 + 9z28
Answer:
62.8 in2
Step-by-step explanation:
With round pizza we need to
find the area of each pizza in
square inches, then determine
the difference.
The area of a circle is given by:
A = πr2
12 inch diameter, radius = 6
a = π(62) = 36π in2
8 inch diameter, radius = 4
a = π(42) = 16π in2
Difference: 36π - 16π = 20π in2
using 3.14 for pi, the difference is
20(3.14) = 62.8 in2
Answer: 
a=-3
b=-9
Step-by-step explanation:
Answer:
160D^2
Step-by-step explanation:
Answer: 250 years
Step-by-step explanation:
12/3=4
4 x $1 = $4 per year
$1000/4=250
250 years
