# 2015 Grade 10 MTAP Math Challenge – Division Orals

Below are the 2015 Grade 10 MTAP Math Challenge Division Oral Competition questions with answers.

Note: I will fix the latex equations later.

15-second question (2 points each)

1.) What is the y-intercept of 2x + 3y = 5?
Answer: 5/3

2.) How many degrees is $1 \frac{1}{5}$ of a revolution?
Answer: 432°

3.) What is the vertex of the parabola with equation $y = x^2 + 2x + 3$?
Answer: (-1, 2)

4.) Find the value of $\log_{\sqrt{2}} \sqrt[3]{2}$
Answer: 2/3

5.) What’s the exact value of sin (29π/4)?
Answer: $\frac{-\sqrt{2}}{2}$

6.) Find the value of $a$ so that $8^3 + 1$ is divisible by $x - a$.
Answer: -1/2  Continue reading