Answer: The length of the other diagonal is 10 cm...
So the diagonal formula is - 1/2* (d1*d2) d1 is the first diagonal and d2 is the second diagonal.
So,
1/2 * (8*d2) = 40
8d2= 40*2
d2= 80/8
d2= 10
Answer:
or 
Step-by-step explanation:
d=5m+11n
-11n=5m-d
11n=-5m+d

It won't be wrong if you also put 
The side lengths could be 4 in. x 16 in. because that equals 64 inches^2. It could also be 8 in. x 8 in. because that also equals 64 inches^2.
Answer:
D
Step-by-step explanation:
i know this because the definition of a supplementary angle is a sum of two angles witch equales 180 (either of two angles whose sum is 180°.) hope this helps :) wyatt
To find the value of j, divide both sides of the equal sign of 7.2.
Answer: J= 12.95