9514 1404 393
Answer:
Step-by-step explanation:
If Anna's age is represented by A, then 12 more than Anna's age will be ...
12 + A
Jason's age is said to be 12 more than Anna's age, so ...
J = 12 + A
__
The sum of their ages will be J + A. That is said to be 50, so ...
J + A = 50
_____
These equations can be solved by using the first to substitute for J in the second.
(12 +A) +A = 50
2A = 38 . . . . . . . . subtract 12
A = 19 . . . . . . . . . . divide by 2
J = 12 +19 = 31 . . . find Jason's age
Jason is 31; Anna is 19.
Answer:
Step-by-step explanation:
Going down by each column it would be 7,17,24
The next column 12,13,25
Next column 19,30,49
Answer: 3.5a+5b=470 and a+b=115
Step-by-step explanation:
Answer:
It is A
Step-by-step explanation:
a= 3.14 x 7 x 7
3.14 x 49
= 30.772
