To eliminate the x terms and solve for y in the fewest steps, by which constants should the equations be multiplied by before adding the equations together? First equation: 6x-5y=17
Second equation: 7x+3y=11

A.) The first equation should be multiplied by 3 and the second equation by -5.
B.) The first equation should be multiplied by 3 and the second equation by 5.
C.) The first equation should be multiplied by 7 and the second equation by -6.
D.) The first equation should be multiplied by 7 and the second equation by 6.

In the triangle abc< angle c is a right angle. find the value of the trig function indicated. find tan a if a =12, b=5 a. 13/12 b. 12/13 c. 5/12 d.12/5

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

What is the image of c for a 90° counterclockwise rotation about a? (3, 7) (-1, 3) (7, 3)