Seven more than three times a number is 31 find the number

A pool is filled with 270 270270 cubic meters of water. The base of the pool is 15 m 15 m15, start text, space, m, end text long and 9 m 9 m9, start text, space, m, end text wide. What is the height of the water in the pool?

A rectangle flag had a width of 3 2/3 feet and area of 8 3/4 square feet. Which expression could be used to calculate the length, in feet, of the rectangle

A boat can travel 105 miles on 15 gallons of gasoline. How much gasoline will it need to go 140 miles? 90 gallons 980 gallons 20 gallons 35 gallons

On a drawing, the scale is 1 centimeter to 30 centimeters. Which of the following is not correct? A. actual length = 150 cm; drawing length = 5 cm B. actual length = 330 cm; drawing length = 11 cm C. drawing length = 7 cm; actual length = 200 cm D.

There is an 80% chance of rain tomorrow and a 20% chance the football game will be postponed. What is the probability that it will rain tomorrow and the football game will be postponed? 4% 16% 20% 60% I tried 20 and it's not the answer

3. Simplify 2a + 2 / a^2 - 1 A) 2 / a - 1 B) 2a + 2 / a^2 - 1 C) - 2 D) a + 1 / a - 1

How many roots does this equation have? x^2 = 64 and 0 < or = x < + infinity

Suppose we fit a regression line to predict the number of incidents of skin cancer per 1,000 people from the number of sunny days in a year. For a particular year, we predict the incidence of skin cancer to be 1.

How do you simplify negative 2M plus 9 m+8

What are three and three fourths plus 3 plus two and one halves equal?