The vertex form:

The axis of symetry is x = h.

We have

Substitute:

<h3>Answer: x = 3</h3>
First you need to multiple minus in second bracket, also in other side you need to multiple - 3 in bracket

Final answer is 0
Answer:
No
Step-by-step explanation: By dividing 12/98 you would get a decimal(0.12244897959) by this not being a whole number it can not be a perfect square.
20/21 (WORK AND EXPLANATION PROVIDED)
We can solve the length of u using Laws of Cosine since we are given with lengths of two side and one angle.
The solution is shown below:
cos U =( s²+t²-u²)/2st
cos 37°= (9²+15²-u²)/2*9*15
0.79863*270=306-u²
u²=306-215.63
u=9.5 units
Therefore, the length of u is 9.5cm.