Answer:
4x+88=180
First angle is 54°
Second angle is 23°
Third angle is 103°
Step-by-step explanation:
Let x be the second angle. First angle is 31+x. Third angle is 2*(31+x)-5 = 62+2x-5 = 2x+57
All angles in a triangle add upto 180°
31+x+x+2x+57 = 180
4x+88=180
Subtract 88 from both sides,
4x = 92
Divide by 4,
x = 23°
31+x = 54°
2x+57 = 2*23 + 57 = 46+57 = 103°
Answer:
<h2>187 </h2>
Step-by-step explanation:

To find f(-9) , substitute the value of x that's - 9 into f (x). That is for every x in f(x) replace it with - 9
We have

We have the final answer as
<h3>187</h3>
Hope this helps you
Yo idk maybe ask your teacher for help
Answer:
0.032
Step-by-step explanation: