Answer:
A "rational expression" is a polynomial fraction, and anything you could do with ... need to evaluate the expression, and it can be useful to know which values would ... x2 + 4 = 0 x2 = –4. This has no solution, so the denominator is never zero.
Step-by-step explanation:
sorry this was all i could find
Answer:
x ≈ 10.92
Step-by-step explanation:
Using the sine ratio in the right triangle
sin83° = 
= 
Multiply both sides by 11
11 × sin83° = x, thus
x ≈ 10.92 ( to 2 dec. places )
Since it is as a ratio of 14:31 there has to be a factor of something. Let's assume this factor as x.
Therefore,
14x + 31x = 90
45x = 90
x = 2
So we have a factor of two. Plug x back into the equation.
The larger angle is 31 * 2 = 62 degrees.
= -15 Multiply both sides by -3 to cancel out the fraction
x = 45
