What value of x

makes this proportion true 6/20 = 78/x

The perimeter of a rectangular wooden deck is 90 feet. The deck's length is, I, is 5 less than 4 times it's width, w. Which system of linear equations can be used to determine the dimensions, in feet, of the wooden deck?

Jill arranges quarters in stacks of increasing powers of 2, starting with the zeroth power (20). If she ends up with six stacks, how many coins has she used?

What is the value of 7 (10 - 16) + 8 : 2?

Kimberly uses 9.8 pints of blue paint and white paint to paint her bedroom walls. 2/5 of this amounts blue paint, and the rest is white paint. How many pints of white paint did she use to paint her bedroom walls?

Find the zeros of the function f (x) = x2+7x+12

Mean and median height: An association of U. S. dog breeders reported in a recent year that the mean height for their adult dogs was 22.0 inches, and the median was 15.9 inches.

The expression 937 (1+x) gives the markup price of a computer, where x is the percent of the markup written in decimal form.

How many bunches of 5 flowers can be made from 14 flowers?

What is 243.875 rounded to the nearest tenth hundredth ten and hundred

Evaluate the function below for f (-6) * f (x) = -x + 11 what's the answer