Answer:
x xjjkdjbdnnxuhxnmdujxnxlxuxbx
x-y=21 ⇒ x=y+21
x+13=2y
Substitute y+21 for x into the equation x+13=2y
So y+21+13=2y
Simplify 34=y
So Danielle is 34 years old. Plug y back in to the original equation
x-34=21
x=55
Tony is 55 years old
Answer:
the pythgorean theorem is
a^2 +b^2=c^2
Step-by-step explanation:
Answer:
x^2-3/3x
Step-by-step explanation:
- x/3-1/x
=x*x-1*3/3*x
=x^2-3/3x