Let the unknown number be x
13x+72= -23x
13x+23x= -72
36x= -72
x= -2
Answer:
The area of a rectangle with length of 5 and width of 5.
Step-by-step explanation:
A number is a perfect square (or a square number) if its square root is an integer; that is to say, it is the product of an integer with itself.
area = lxw
A=5x5 (5 times itself)
A=25
therefore it is a perfect square
Answer:
I think 120
Step-by-step explanation:
The seventh term of the sequence is
-1
—
25
