Answer:
65 degrees
Step-by-step explanation:
The missing angle on the bottom is 35 degrees. This is because it lies on a straight line with the other angle being 145 degrees and a straight line is always 180 degrees, so 180-145=35 degrees. Now we have to find x so we should add the two known angles (35+80=115) and subtract it from 180 (180-115) to get 65 degrees for x.
root (-20,0) vertical intercept (0,4)
So the expression is:
![4 a^{2} + 2a + 4 a^{2} - 5](https://tex.z-dn.net/?f=4%20a%5E%7B2%7D%20%2B%202a%20%2B%204%20a%5E%7B2%7D%20-%205)
You can combine like terms, which are terms that contain the same variables raised to the same power. That means you can combine the two
![4 a^{2}](https://tex.z-dn.net/?f=4%20a%5E%7B2%7D)
.
![4 a^{2} + 4 a^{2} = 8 a^{2}](https://tex.z-dn.net/?f=4%20a%5E%7B2%7D%20%2B%204%20a%5E%7B2%7D%20%3D%208%20a%5E%7B2%7D)
The other terms can't be combined.
Your final answer should be
![8 a^{2} +2a-5](https://tex.z-dn.net/?f=8%20a%5E%7B2%7D%20%2B2a-5)
.
<h2>
Greetings!</h2>
Answer:
B)
Step-by-step explanation:
Y intercept:
Simply substitute all the x values with 0:
When x = 0:
3(0) - 2y = 18
Move the - 2y over to the other side making it a +2y:
0 = 18 + 2y
Move the +18 over to the other side making it a -18:
-18 = 2y
Divide both sides by 2:
![\frac{-18}{2} = \frac{2y}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-18%7D%7B2%7D%20%3D%20%5Cfrac%7B2y%7D%7B2%7D)
-9 = y
So y intercept is:
<h3> (0 , -9)</h3>
X - intercept:
Simply substitute all the Y's with 0:
3x - 3(0) = 18
3x = 18
Divide both sides by 3:
![\frac{3x}{3} = \frac{18}{3}](https://tex.z-dn.net/?f=%5Cfrac%7B3x%7D%7B3%7D%20%20%3D%20%5Cfrac%7B18%7D%7B3%7D)
x = 6
So the X intercept is:
<h3>(6 , 0)</h3>
This means that your guess of B is correct.
<h2>Hope this helps! </h2>