If 50 decreased by 4 times a certain number, the result is 15 more than the number. find the number

50 divided by 4 is 12.5 so what can 12.5 go into its nearest number?

The perimeter of a rectangle is P = 2L + 2W, where L is the length and W is the width. If the perimeter is 200 feet and the length is 40 feet more than the width, what are the dimensions?

A fair coin is tossed, and a marble is chosen from the bag whose contents are shown below. 3 red marbles, 3 blue marbles, and 4 green marbles. What is the probability of the coin landing heads up and a blue (B) marble being randomly selected?

How will you write 5 x 5 x 5 x 5 x 5 as an exponential expression?/?

What is the sum of the exterior angles of a 27-gon?

A 96 mile trip required 6 gallons of gasoline. At the rate, how many gallons would be required on a 160-mile trip?

Solve the equation for Y. 4x-5y=9

The rate at which a planet receives heat from a hot sphere such as sun varies directly with the fourth power of the sun's absolute tempature, directly with the surface area of the Sun, and inversely with the square of the distance from the Sun to

Write the algebraic expression for the quotient of 79 and x

Which expression is equivalent to 647 times 39.