If the sol'ns are -9 and 9, then we can use this to form our eq'n:
(x - 9)(x + 9) = 0
x^2 - 81 = 0
so...
x^2 + z - 103 = x^2 -81
z - 103 = -81
z = -81 + 103
z = 22
I am a little confused about the question you are trying to ask. It is an isosceles triangle because it has two sides of equal length.
The other angle would be...
180-2(55)=70 degrees
In this problem, you need to figure out whats 23% of 29% to find the percentage of the total group becoming vegetarians.
In order to do this, you can convert the percentages to decimals and multiply.
.23 x .29 = .0667 or 6.67%
6.67% of the total group are considering becoming vegetarians.
