Substitute the variables for the values given.
9 + 11(2) - 4(7) =
9 + 22 - 28 =
31 - 28 =
3
So, 3 is the answer.
8. To find the answer you can eather multipy it for each of the sides or you can add it 6 times once for each side

9. You basicly do the same thing as the previous problem but with the new numbers and you add each number 2 times
10. For are you multiply Base × Height So all you have to do is Multiply the 2 numbers shown together

11-12 Is the same but witb the new numbers
I hope this helps!
Answer:
49
Step-by-step explanation:
devaughn= x+15
sydney= x
set an equation adding both their ages
x+x+15=113
2x+15=113
subtract 15 from both sides
2x=98
x=49
sydney is 49
Answer:
ANSWER: 
Step-by-step explanation: