Solve the system of linear equations in terms of a, where a=z
2x-7y-2z=-4
-10x-14y-6z=8

The poll report includes a table titled, “americans using cash now versus five years ago, by age.” the age intervals are not equal. why do you think the gallup organization chose the age intervals of 23–34, 35–54, and 55+ to display these results?

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $36.98. find the probability that a randomly selected bill will have an amount greater than $173, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Aline passes through the point (9,-7) and has a slope of 4/3 write an equation in point-slope form for this line. first to answer correctly gets brainleist