B= 30
a2+b2=c2
72^2+b^2 = 78^2
5184+b^2 = 6084
b2 = 900
b = 30
The answer is 14. First, get both numbers and add them twice (2.5+2.5+4.5+4.5) or (2.5 * 2 + 4.5 * 2). Then you should get 2 numbers which are 9 and 5. Then it should be 14, which is the answer.
Answer:
Step-by-step explanation:
cost is 20 fee + .25 per mile.
c =20+0.25m
Let 
....(1)
Multiply both sides of equation (1) by 10.
.... (2)
Multiply both sides of equation (1) by 100.
... (3)
Subtract equation (2) from equation (3)
Hence, the required fraction form is 
.... Answer.
7.309
The thousandth is third number to the right of the decimal. We round 5+ up and 4- we round down.
So we round the decimal into third place, the fourth place is the 7 so we round that up, and we get 7.309
