The circumference of the earth is approx. 40,000 km. a) What is the diameter of the earth?

b) Calculate the volume of the earth​

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.

Let x = a + bi and y = c + di and z = f + gi. which statements are true?

Asalsa recipe uses green pepper, onion, and tomato in the extended ratio 3: 5: 7. how many cups of tomato are needed to make 105 cups of salsa? a. 7 b. 21 c. 35 d. 49