Write an algebraic expression for each item. Use x for the variable. Example:
A number times the difference of 58 and 17
x (58-17)
1. a number subtracted from 50
2. twice a number added to 189
3. 109 more than a number
4. 99 more than a number
5. a number times the difference of 76 and 39
6. a number added to 75
7. thrice the number subtracted from 45
8. 15 more than twice a number
9. 25 less than 3 times the number
10. a number times the sum of the number and 88​

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%

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?

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?