The mean of four numbers is 70. The mean increases to 80 when a fifth number is added. What is the fifth number?

What is 11.42424242 as a fraction

Which statement best describes the domain and range of f (x) = - (7) * and g (x) = 7*? Of (x) and g (x) have the same domain and the same range. Of (x) and g (x) have the same domain but different ranges.

The radius of a cylinder is increased by a factor of 5. The height is not changed. What is the effect of the increase on the volume of the cylinder? A) The volume of the cylinder increases by a factor of 5.

What are the x-intercepts of the graphs of the function shown below y=x^2+4x-32?

Which of the following is equal to the expression below? (7^-5) 3 a. (-1/7) - 15 b. (1/7) ^-15 c. (1/7) ^15 d. (-1/7) ^15

How many $10 bills are the same as ten $1 bills

What is the sum of the arithmetic series below? Use the formula for the sum of an arithmetic series. 18 ∑ 2i-9 i=1

What is the value of x? 3x-8=8x+4/2

6 more than 7 times a number is 41

Kneisl's Mountain Adventures store is having a sale on carabiners. During the ... During the sale, you can buy 4 carabiners for $29.60. What is the unit price of the carabiners?