The matrix equation below can be used to solve a system of linear equations. what is the solution to the system? [6 4 9 6] [x y] =[1 3]
a. x=1/2, y= 1
b. x= 1/10, y= 1/5
c. the system has no solution
d. the system has infinite solutions

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?

In the diagram of circle o, what is the measure of zabc?