Answer:
The above equation is a quadratic function whose zeroes are 3 and 12.
Step-by-step explanation:
The general quadratic equation is given by :

It is given that, the zeroes of a quadratic function are 3 and 12. It means they must be factors of it such that,

So, we can write as :

Multiplying both factors,

So, the above equation is a quadratic function whose zeroes are 3 and 12.
we are given the data from 9 to 20. we can plot the data in bar graph. The mean of the data is 15. in this case, we plot the number in x and y in terms of frequency. We can see that the plot is evenly distributed at 15 and then also at the extremes. Hence the answer to this problem is C. symmetric
(x+108) and (x+88) are supplementary angles. This means that they add to 180.
(x+108) + (x+88) = 180
Solve for x:
2x + 196 = 180
2x = -16
x = -8