Answer:
- 15, - 16
Step-by-step explanation:
-15 + (-16) = - 15 - 16 = - 31
Answer:
2,21 * 10^20
Step-by-step explanation:
Rational number, because the Square root of 400 is 20, since 20 x itself is 400. Hope this helps!
Answer:
You would do this problem like a normal varible problem. x=10
Step-by-step explanation:
Since 9x is a right angle the inside would also be 9x
9x+4x+10+40=180
180 because that is how much a triangle equals
combine like terms
13x+50=180
subtract 50 from both sides
13x=130
divide by 13
x=10
<u>Hope this helps!</u>