This is the second part (questions 11-20) of the solutions of the Grade 9 MTAP 2015 Elimination Questions. The first part can be read here.
Although reasonable care has been given to make the solution accurate as possible, the solver is also human. Please comment below if you see any errors.
11.) If , solve for in .
Multiplying both sides by , we obtain
Squaring both sides of the equation, we get
Factoring, we have
So, or .
But from the given above, , so the only solution is
Answer: 9/4 Continue reading “Grade 9 MTAP 2015 Elimination Questions with Solutions – Part 2”
Below are the 2015 Grade 9 MTAP Math Challenge Division Oral Competition questions with answers.
15-second question (2 points each)
1.) Determine all positive number x that satisfy .
Answer: x = 2
2.) What is the fourth power of ?
4.) If a ♠ b = , what is the value of (3 ♠ 4) ♠ 12?
5.) Suppose that x, y and z are positive integers such that xy = 6, xz = 10 and yz = 15. What is the value of xyz?
Answer: 30 Continue reading “2015 Grade 9 MTAP Math Challenge – Division Orals”