What is the sum of complex numbers 2+3i and 4+8i, where i = square root - 1

Determine, to the nearest tenth, the surface area of a tin can with a radius of 10 centimeters and a height of 12 centimeters.

A cylindrical steel water pipe has a length of 12 feet and a radius of 1.5 feet. Which of these best represents the volume of this length of pipe? A 57 ft3 B 85 ft3 C 113 ft3 D 170 ft3

Which of the following best describes the algebraic expression? A. Ten times the quantity of a number plus two. B. The product of ten plus a number and two. C. The sum of ten times a number and two. D. Ten times the sum of a number and two.

50% of all cakes jenny baked were party cakes 1/5 were fruit cakes and the remainder where sponge cakes what percentage were sponge cakes

A gallon of latex paint can cover 400 square feet. Maria has a rectangular room whose dimensions are 22 feet by 17 feet, with 7 -foot ceilings. How many gallon containers of paint does she need to buy to paint two coats on each wall?

How many times greater is 7000 than 700

Find the surface area of a sphere with a diameter of 30 m. Leave answers in terms of pi.

A cube has a surface area of 96 square centimeters. How long is each face of the cube? A) 16 cm. B) 4 cm. C) 6 cm2. D) 16 cm4

How much does 24 pints equal in gallons?

one box contains 7 red and 4 green balls, and the second box contains 3 red and 5 green balls. one ball is drawn from the first box and placed unseen in the second box. what is the probability that a ball now drawn from the second box is red