Rewrite the equation as

If we choose
, the right hand side becomes zero, and so does the left hand side.
If you graph the two functions
and
, you'll see that there are only two solutions, so the ones we found are the only ones.
Answer:
x = 30
Step-by-step explanation:
A straight angle is 180 degrees, meaning the two angles given add up to 180.
5x + x = 180
6x = 180
x = 30
Answer:
b
Step-by-step explanation:
:)
Answer:
No.
Step-by-step explanation:
Since we know the side lengths of the triangle, we can figure out whether or not this is a Pythagorean triple.
Pythagorean theorem: a^2 + b^2 = c^2
a and b are both smaller than c.
So,
8^2 = 64.
13^2 = 169.
15^2 = 225.
64 + 169 = 233.
233 is not equal to 225.
Therefore, this is not a right triangle.
Answer:
Acute
Step-by-step explanation: