X is Bella's age
x- 4 is Francine's age
Answer: (50 + 2) + 20 +4
Step-by-step explanation: you can split each number into two parts that equal that number, like 52 could be 31 +21
You could drive 1,320 miles on 60 gallons of gas
Answer:
9.7 , 310.4
Step-by-step explanation:
length of each side = 64/8=8
using theorem Pythagoras
A²=10.5² – (8/2)²
A=9.7 ft
area of triangle
1/2×8×9.7=38.8
area of octagon
38.8×8=310.4