Hello!
An equation has an (=). They equal something. For example, 1+1=2 is an equation.
An expression does not have an equal sign. For example, 2 or 1+3 are both expressions. They have no equal sign.
I hope this helps!
Answer:
33
Step-by-step explanation:
a right angle is 90 degress since the other side is 57 than ac must be 33
Answer + Step-by-step explanation:


_______________________


_______________________

_______________________
15⁶ × 15³ = 15⁶⁺³ = 15⁹
_______________________
<u>Recall</u> : If a ≠0 ⇒ a⁰ = 1
Then
Since 6⁸ ≠ 0 ⇒ (6⁸)⁰ = 1
Answer:
30+(2x+7)+63=180(sum of angles of triangle )
30+2x+7+63=180
2x+100=180
2x=180-100
x=80/2
x=40