Answer:
Correct choice is A
Step-by-step explanation:
Note that the denominator
Then rewrite the numerator
as 
Substitute both expression into the initial expression:

Answer:
Three-fifths of m equals 15
This is a right triangle (you can confirm by using Pythagorean Theorem: 15² + 36² = 39²)
A = 
A = 
= 15 * 18
= 270
Answer: 270 cm²
A) -2, -1
(solve the second equation for x (subtract 2y to the other side, then divide by 2 so x=-y-3) then plug that equation into the x value of the first equation to get y=-1; plug y=-1 into the second equation to get x=-2)
Answer:
5/14
Step-by-step explanation:
let the aaded no be x
3/14 + x = 4/7
x = 4/7-(3/14)
x = 5/14
here added no is 5/14