7x-4y=20 for y when x=3

A hiking trail has a slope of 7/32. What is the measure of the angle that the trail makes with a horizontal line? Round to the nearest degree.

Find the value of the expression (-8.6) + 7.2

The Circumference C of a Circle is a Function of its Radius R Write the equation in function form Graph the function Is the domain discrete or continuous? Is - 2 in the domain? Explain Is 6 in the range? Explain

Evaluate ab if a = 40 and b = - 3

The simple interest formula i equals p times r times t gives the interest earned on an investment of p dollars at interest rate r for a time of t years. how much does hector need to invest at a rate of 2% in order to earn $25 interest in 3 years?

There are 3 measures of music that are played 3 times in a song. If the first measure has 8 notes, the second measure has 16 notes and the third measure has 4 notes, how many notes are played throughout the song?

Find the value of k for which the given function is a probability density function. f (x) = 6k on integral (-1,1)

Solve :.5x - 3.5 = 3x + 4.5

In a recent survey of 440 people, 1/4 said they watched television every evening 2/5 said they watched five or six nights each week, and the remainder said they watched four nights a week or less

Identify the population being studied. The heights of 5 out of the 38 green bean plants at Mr. Lonardo's greenhouse. a. The 5 green bean plants at Mr. Lonardo's greenhouse. b. All green bean plants in greenhouses. c. All green bean plants at Mr.