Formula to find the following problem

what is the next number in the series 131 118 105 92 79

How close is the t-value to the corresponding z-value (at the bottom of the column for d. f. = ∞) ?

The sum of two numbers is 21. The larger number is 6 less than twice the smaller number.

A stained glass window is in the shape of an equilateral triangle. what is the measure of one interior angle of the triangle

Before agreeing to purchase a large order of polyethylene sheaths for a particular type of high-pressure oilfilled submarine power cable, a company wants to see conclusive evidence that the true standard deviation of sheath thickness is less than.

Solve the system using substitution. 5x-y=75 3y=x

The temperature went from 48° to 36° in two hours. What is the percent of decrease in the temperature?

What is the slope of y=1/2x + 3?

Which of these r-value represents the strongest correlation - 0.5 - 0.7 - 0.4 - 0.6

The circumference of a circle is 50.24 centimeters. What is the diameter of the circle?

Find the product of 0.456 x 10 to the 6