Hello there!
If x = -3
Calculate x^2 - x
We need to replace x by 3
3^2 - 3
=3 * 3 - 3
= 9 - 3
= 6
I hope this helps!
<span>All the angles of a triangle add up to 180 degrees.
Since two of the angles are the same, we can write:
2A+B=180
Where 2A accounts for the two angles that are the same.
We are given the relation:
B=A+30
We can plug this into our first equation:
2A+A+30=180
</span><span>
Combine like terms and move the 30 to the other side:
3A=150
Divide both sides by 3:
A=50
We can solve for B by plugging A back into our relation:
B=50+30
B=80
To check: 80+50+50 so we are correct.</span>
Answer:
The answer is 12. Please please like.
g = (1+2a)/a
multiply each side by a
ga = 1+2a
subtract 2a from each side
ga -2a =1
factor out a
a(g-2) =1
divide by g-2
a= 1/(g-2)
Answer:
-9
Step-by-step explanation:
2x + 7 = -11
2x = -11 - 7
2x = -18
x = -9