Hello!
Answer:
d=2r
Step-by-step explanation:
Simplify both sides and isolate the variable.
Hope this helps!
If i'm mistaken; he needs to buy 3 sheets?
(x+y)^2=x^2+y^2+2xy=73+2*24=73+48=121
⇒ (x+y)^2=121
Answer:
y=4, x=8
Step-by-step explanation:
system:
x+y = 12, x=2y
convert to 1 variable, simplify:
2y+y=12
3y=12
y=4
x=2y=4*2=8