Plz hurry will mark brainliest

jerry solved the system of equations.

x - 3y = 1

7x + 2y = 7

as the first step, he decided to solve for y in the second equation because it had the smallest number as a coefficient. max told him that there was a more efficient way. what reason can max give for his statement?

the variable x in the first equation has a coefficient of one so there will be fewer steps to the solution.

the variable x in the second equation has a coefficient of 7 so it will be easy to divide 7 by 7.

the variable y in the second equation has a coefficient of 2 so it will be easy to divide the entire equation by 2.

the variable x in the second equation has the largest coefficient. when dividing by 7, the solution will be a smaller number.

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42

In a test for esp (extrasensory perception), the experimenter looks at cards that are hidden from the subject. each card contains either a star, a circle, a wave, a cross or a square.(five shapes) as the experimenter looks at each of 20 cards in turn, the subject names the shape on the card. when the esp study described above discovers a subject whose performance appears to be better than guessing, the study continues at greater length. the experimenter looks at many cards bearing one of five shapes (star, square, circle, wave, and cross) in an order determined by random numbers. the subject cannot see the experimenter as he looks at each card in turn, in order to avoid any possible nonverbal clues. the answers of a subject who does not have esp should be independent observations, each with probability 1/5 of success. we record 1000 attempts. which of the following assumptions must be met in order to solve this problem? it's reasonable to assume normality 0.8(1000), 0.2(1000)%30 approximately normal 0.8(1000), 0.2(1000)% 10 approximately normal srs it is reasonable to assume the total number of cards is over 10,000 it is reasonable to assume the total number of cards is over 1000

Mia’s gross pay is 2953 her deductions total 724.15 what percent if her gross pay is take-home pay