The table below shows the probability distribution of students in a high school with 1500 students. What is the expected value for the age of a
randomly chosen student?
Age
13
14
15
16
17
18
Probability
0.01
0.25
0.28
0.30
0.15
0.01

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

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

What is the radius of the cone in the diagram? round your answer to the nearest whole number