Can you help me in my recent
Answer:
x=6
Step-by-step explanation:
13x+12=90
13x=78
x=6
Answer:
10
or 14.14 appromiximately
Step-by-step explanation:
Area of square = 100
So length on side = 10 because all sides of square equal.
Length of Diagonal = Side x 
So the length of diagonal is 14.14 approximately
Answer:
$42.50
Step-by-step explanation:
I'm pretty sure