What does r equal?

5 (3-5r) + 3r = - (5r + 2)

The height of an airplane during a landing is given by 22,000 + (-480t) where t is the time and minutes, how many minutes it takes the plane to land to the nearest hundredth of a minute.

If a race is 10 kilometers long and from the start to the end there are marks at each 500 meter mark how many marks will there be?

last week shawn ran 24 laps aroud the lake finn ran 5-6ths as many laps around the lake then shawn did how many laps around the lake did finn run

Find thesimplfies form of the expression Give your answer in scientific notation. (8x10^4) (9x20^-8)

Sam has 3/8 yard of twine to build model ship how much can he buy

Which of these is a possible mathematical description of the wave? Which of these is a possible mathematical description of the wave? Asin (2πft) cos (2πz/λ) Asin (2πft) sin (2πz/λ) Asin[2πf (t+z/v) ]Asin[2πf (t-z/v) ]

Alan found the value of the expression (15 - 6) 2 to be 189. Is he right? A) No, because first he should square 15 and 6. B) Yes, because first he should square 15 and 6. C) No, because first he should subtract 6 from 15.

What is 6/8 in the simplest form

Which of the following equations is of a parabola with a vertex at (0, - 3) ? y = (x - 3) ^2 y = (x + 3) ^2 y = x^2 - 3 y = x^2 + 3

Which is the correct way to write $450.05 in words on a check? four hundred fifty dollars and five cents four hundred fifty and five hundredths dollars four hundred fifty and 05/100