A model airplane is built with a wingspan of 18 inches. The actual wingspan of the airplane is 90 feet. Find the scale.

The price of an item has dropped to $66 today. Yesterday it was $120. Find the percentage decrease.

The weight of an object on Mars is about 3/8 its weight on Earth. If Sam weight 85 pounds on Earth, how much would he weigh on Mars?

Change the fraction 3 / 4 to a percent. A. 63% B. 133% C. 75% D. 34%

What is the answer to 9*4 *.5

Slope and y-intercept of - 2x+3y = - 21

Define a random variable x = number of times that owner-occupied units had a water supply stoppage lasting 6 or more hours in the past 3 months and develop a probability distribution for the random variable. (Let x = 4 represent 4 or more times.

After conducting a financial transaction, a company's accounting staff records a $1,000 decrease in a particular asset.

A manager has 2500 kg of sand delivered to a construction site everyday. About how many tons of sand does he have delivered to the site after 4 weeks? 1 ton = 907.2 kg

Convert 375% into decimal form

The factor tree for 60 has all of the factors in the factor trees for 15 and 30, but not 45. explain why this is true