Nancy sold half of her books and then bought 7 more she now has nine books how many books did she begin with

A large diamond with a mass of 4289.6 grams was recently discovered in a mine. If the density of the diamond is 3.51 grams over centimeters cubed, what is the volume? Round your answer to the nearest hundredth. 142.78 cm3 384.96 cm3 1221.9 cm3 33759.

The tallest man ever recorded was Robert Wadlow, who was 272 cm tall. The tallest women on record was Zeng jinlian? Her height was 91% of Wadlows's height. (Round to the nearest cm).

A rectangular garden has dimensions of 12 feet by 20 feet. The homeowner wants to increase each dimension by 20%. A. Find the original perimeter and area of the garden B.

A rotating object makes 5/6 of a revolution in 7/10 second. Find the approximate speed in revolutions per second. Write your answer as a decimal.

32.05 over 15 gal what is the unit rate

A boat travels for 4 hours at a constant speed of 35.25 km/h. How far does the boat travel? A. 105 km B. 120 km C. 141 km D. 352 km

What is the letter x in the expression 3x^2-4

Is 5 (2x-3y) and 10x-3y equivalent?

Find an equation of the line that satisfies the given conditions. through (9, 7); perpendicular to the line y = 5

A pizza place near your office has small cheese pizzas for $4 and small pepperoni pizzas for $5. You are going to pick up pizzas for fourteen people in your office.