I hope this helps you
COS28=15/17
<span>1.) Is 64 squared rational or irrational?
Ans: Rational
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2.) Is -1.2 repeating decimal rational or irrational?
Every repeating decimal is rational.
Every non-repeating decimal is irrational.
All whole numbers are rational.
All fractions are rational.
nth roots of a^k are irrational unless k is a multiply of n.
Example: The cube root of 3^6 is rational but the cube root of 3^5 is not.
Cheers,
Stan H. </span>
Answer c: 2 and 3
Of course Q is on plane PQR. If S is as well, then QS is as well.
I don't know all of them but I can tell you that B and E are answers that you should check.