3. if x and y are integers such that x2=64 and ys=64, which of the following could be true?
1. x = 8
ii. y = -4
iii. x +y = -4
a. i only
b. ll only
c. i and iii only
d. ii and iii only
c. land
and i only

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

What is coefficient of the term of degree of degree 5 in the polynomial below

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36