2 Points
What should be the first step in adding these equations to eliminate y?
12x - 2y = -1
+ 4x+6y=-4
O A. Multiply the top equation by 3.
O B. Multiply the top equation by 4.
O C. Multiply the bottom equation by 3.
O D. Multiply the bottom equation by 12.
SUBMIT

11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

1- 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.2- 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 the first question?

Combine like terms to make a simpler expression 3z+z