2015 MTAP Reviewer for Grade 9 Solutions(6-10)
Previously, we solved the first 5 problems in 2015 Eliminations of MMC for grade 9. This time, let’s move on to the other 5 problems. You may utilize this site if you are not a grade 9 student. We have a search button at the top menu to take you to the right page. All reviewers for grade 9 can be checked here.
If and , what is x?
We solve for y for the second equation,
Now, we substitute this y to the first equation,
we equate this to 0,
Observe that this is a quadratic equation in x/9, thus by factoring we have
Solving for x’s:
Solving for another x:
Since x>0 is the given restriction in the problem, the only solution is x=9.
If , what is f(x-3)?
We can rewrite f(x) in factor form as follows,
To find f(x-3), we let x=x-3,
If and , for all real number x. For what real number does
Solving for g(-a) and f(-a),
Going back to the desired equation,
Solving for a:
Solving for another value of a:
Therefore, the answers are 0 and -1.
Solve for x:
First step is to square both sides of equation to remove the outermost radical.
Squaring both sides again,
Solve for x:
By cross multiplying the left side of equation we have,
let A=2x, B=x+2,
Plugging in the real values of A and B we have,
Solving for x: