3x = 21 use a modelx

If a number is doubled, and 16 is added to it, the result is 40. What is the number?

What is the formula used to calculate average velocity

Description of different houses on the market includes the following three variables. Which of the variables is quantitative? (A) the square footage of the house (B) the monthly gas bill (C) the monthly electric bill (D) all of the above

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?

1) - 10m (-3 + 3m) - 5 (8m - 6)

The vertices of a triangle are A (0, 2), B (-2,-5), and C (0,5). Find the new vertices. Use the rule (x, y) → (X + 3, y - 2) to translate each vertex. Enter each vertex as an ordered pair. The new vertices are A' , CH

It takes 2 1/2 teaspoons of powdered mix to make one cup of hot chocolate how many cups can you make with 45 teaspoons of mix?

Given a 13-card bridge hand has been dealt from a standard deck of 52 cards, what is the probability of having a) exactly 6 hearts? b) exactly 7 hearts, three diamonds, two clubs, and one spade? Round your percentages to three decimal places.

What is the y-intercept of x=0?

1) On a city map drawn on a coordinate plane, the city park is located at (20, 4) and the school is at (20, 9).