Answer:
x=20
Step-by-step explanation:
x+2x+x+10=90
4x+10=90
4x=90-10
4x=80
x=80/4
x=20
Answer:
r=-11
Step-by-step explanation:
Your answer is 9.
Since you have
2(2)^2 you get 2(4) which is 8.
Then you have -3(2) which is -6.
Lastly you have the 7.
When you add it up you get.
9
B for sure!!!!!!!!!!!!!!!!!!!
7*6*x^-8*x^3
42x^-8+3 (bases same powers add)
42x^-5
1/42x^5
<span>so the simplified </span>form<span> of 7x^-8*6x^3 is=1/42x^5</span>
