Arjun R.

A butcher has some hamburger that is 21% fat and some that is 15% fat. How many pounds of each should be mixed to make 75 lb of hamburger that is 17% fat?

Two planes are 2300 mi apart and are traveling toward each other. One plane is traveling 120 mph faster than the other plane. The planes pass each other in 2.5 h. Find the speed of each plane.

I don't understand at all, I need an explanation.

A cylindrical glass tube 20.0 cm in length is filled with acetone . The mass of the acetone to fill the tube is found to be 18.73g. Calculate the inner diameter of the tube in cm . The density of... more

Identical point charges of +3.1 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge... more

A length of copper wire has a mass of 7.29 g. How many moles of copper are in the wire?

For f(x) = 8x−4 and g(x) = 1/8(x+4), find (f◦g)(x) and (g◦f)(x). Then determine whether (f◦g)(x)=(g◦f)(x).What is (f◦g)(x)​? 

Given f (x)= 4x2 - x + 2 and g (x) = 2 x2 -1, compute and simplify the following : (f . g) (x)

For the point on the plane (8,−2), what are the coordinates of the point that will result from a translation of 4 units left and 2 units up, followed by a rotation of 90° counterclockwise about the... more