Need to check algrabic anwsers

Rico sold 38 papers in 2 hours. at this rate how many papers would he sell in 3 hours.

T is inversely proportional to the cube of u. When u=5, t = 0.0096 find the value of u when t = 0.15

Ms Li has 4 different books and 1 red pen, 1 blue pen and 1 black pen she is wrapping one book and one pen. Draw a tree diagram to find the number of combinations she can choose.

A balloon has a circumference of 28 in. Use the circumference to approximate the surface area of the balloon to the nearest square inch. 784 in2 2,463 in2 998 in2 250 in2

Two intersecting circles have a common chord with length 16 ft. The radii of the circles are 10 ft and 17 ft respectively. Express the distance between the centers of the circles in feet.

How much candy will each friend get if 5 people share 3/4 pound of candy equally?

Find the sum of 7.7, 0.94, and 13

Simplify - 12x^4 / (x^4+8x^5)

What is the mass of a peach?

The ratio of a triangle is 2:3:4 the shortest side is 15 inches what is the perimeter