I suppose what makes this question annoying is that there is the question mark so what i'll do first is substitute the question mark with x. also, there are annoying parenthesis so we'll first eliminate the ones we don't need. now we just have to solve for x.
-3.4 + (-8 + 2) = (x + (-8)) + 2
adding a negative number is subtracting that number so x + (-8) = x - 8
-3.4 + 2 - 8 = x - 8 + 2
-3.4 -6 = x - 6
x = -3.4
make sure you are aware that the negative sign belongs to the number after it so -2 + 4 is not -(2+4) = -6 but rather 4 - 2 = 2.
let me know if you have any questions!
3/(x-1) - 1/(x^2-1) = 5/(x-1)
Subtract 3/(x-1) from both sides
-1/(x^2-1) = 2/(x-1)
Factor x^2 - 1
-1/[(x-1)(x+1] = 2/(x-1)
Multiply by (x-1)(x+1) on both sides
-1 = 2 (x+1)
-1 = 2x + 2
Subtract 2 from both sides
-3 = 2x
Divide by 2 on both sides
-3/2 = x
Answer:
Option C
Step-by-step explanation:
we know that
The measurement of the <u>exterior angle</u> is the semi-difference of the arcs it comprises
so
![76\°=\frac{1}{2}(arc\ ST-arc\ XZ)](https://tex.z-dn.net/?f=76%5C%C2%B0%3D%5Cfrac%7B1%7D%7B2%7D%28arc%5C%20ST-arc%5C%20XZ%29)
we have
![arc\ ST=185\°](https://tex.z-dn.net/?f=arc%5C%20ST%3D185%5C%C2%B0)
![arc\ XZ=x\°](https://tex.z-dn.net/?f=arc%5C%20XZ%3Dx%5C%C2%B0)
substitute
Rewrite
Answer:
here is the answer for your question
A≈154.84
I put the equation in my graphing calculator and looked at the table.
It seems the zeroes are:
(-2,0) and (5,0)... I'm not really sure about the last one, I'm sorry