Which expressions represent rational numbers? check all that apply. other answer is 36 sqrt + 21 sqrt

Keep in mind, repeating number is rational

1st: 17.43(repeat 43) +√49 : rational

4th: √64 + 6/11: rational

A. A repeating decimal is rational. sqrt(49) = 7. Sum is rational.

B. sqrt(44) is not rational. sqrt(5) = 5. Sum is irrational.

C. sqrt(36) = 6 and rational. sqrt(21) is irrational. Sum is irrational.

D. sqrt(64) = 8 and rational. A fraction of integers is rational. Sum is rational.

E. sqrt(6) is irrational. sqrt(9) = 3 and rational. Sum is irrational.

F. sqrt(36) = 6 and rational. sqrt(21) is irrational. Sum is irrational.

Only A and D are rational.

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.