## MauriceLong 3 years ago USE the formula to find the value of the remaining variable. P=2L+2W;L=10,W=78 P=_____

1. luxiliu

Just substitute in L and W.

2. MauriceLong

how would i do that..

3. luxiliu

i.e. P=2L+2W P=2(10)+2(78)

4. MauriceLong

2*10+2(78)=1716 is that correct

5. MauriceLong

6. luxiliu

Yep, its 176 :)

7. MauriceLong

can u help me with another problem

8. MauriceLong

The sum of a page number on the facing pages of a book is 89. What are the page numbers. The number on the left page is___ The number onthe right page is____

9. luxiliu

Well, lets give the first page number the symbol "x". because the second page number has to be one more than "x", it is "x+1". Therefore, the equation must be...?

10. MauriceLong

x+1=89

11. luxiliu

it would be 2x+1=89 because you are finding the sum of the two pages :)

12. luxiliu

So now just solve to find x :)

13. MauriceLong

x=44

14. luxiliu

Yep :) so the first page number is 44, and the second is 45 :)

15. MauriceLong

Solve for g. A=gr