Using PEMDAS, 12-5 is 7. 7^2 is 49. 49+22=71. 71-3=68.
Answer:
No
Step-by-step explanation:
The answer would be 18 units I believe
2(7+2)
2(9)
18 units
Yes.
3y=2x +1
3 (1) = 2 (1) +1
(3,3)
(1,1) is a solution
87 + 34
87 rounded = 90
34 rounded = 35
90 + 35 = 125
or
87 rounded = 90
34 rounded = 30
90 + 30 = 120
when rounding you are only getting an estimate so it is not going to be exact however you do it.