Calculate the mean of each data set below. Can you find any shortcuts that allow you to find the mean without having to do much calculation?

a. 6, 10, 6, 10

b. 11, 12,12, 13, 12

c. 0, 5, 4 8, 0, 7

Do five 20c make one dollar in NZ money?

What's the difference between t and 7

They randomly survey 50 students about how much money they spend on lunch each day. What is the expected value for a student to spend on lunch each day?

Lauren bought television that cost $805. She plans to make equal payments of $38 each month until the television is paid in full. About how many payments will Lauren make? A) 15 B) 20 C) 30 D) 38

What is the answer to y = 2x-5

A cone has a height of 2.5 in. and a radius of 5 in. What is the volume of the cone? (Use 3.14 for pi. Round the answer to two decimal places.) 32.71 in3 65.42 in3 196.25 in3 588.75 in3

This is how we know were in a pandemic. When the BMX bike company starts selling toilet paper for $7.

If p, q are zeroes of polynomial f (x) = 2x^2-7x+3, find the value of p^2+q^2

Suppose $x$,$y$, and $z$ form a geometric sequence. if you know that $x+y+z=18$ and $x^2+y^2+z^2=612$, find the value of $y$.

A manager checked production records and found that a worker produced 160 units while working 40 hours. In the previous week, the same worker produced 138 units while working 36 hours.