This is markdown, thus once again, two equations.
Markdown=Original-New
and
Markdown%=Markdown Amount/Original*100
Markdown=10-3
Markdown=7
Markdown%= 7/10*100
=0.7*100
=70
Thus, the percent decrease/Markdown is 70%.
(5)^3+5= 125+5= 130
130 is answer
Add 6 on both sides, canceling out that -6
3x = 21
Divide both sides by 3 to isolate that variable and get your answer
x = 7.
16 + 36 = 52
unknown side = square root (52)
unknown side = 7.21
or
unknown side = 2 square root (13)
