Brian has a model collection of cars, trains, amd fire engines. He has 28 cars. The number of fire engines is 2 times the number of trains. He has 67 models in all. How many of each type of model does he have?

The person is 6 feet tall and casts a shadow of 4.7 feet. The building casts a shadow of 20.5. How tall is the building? Round to the nearest hundredth.

Represent the following sentence as an algebraic expression, where "a number" is the letter x. number is decreased by 2.

What is the best estimate for the answer to 321.786 + 240.273?

F (x) = - 3x-4 what's the Inverness function?

Find the center and radius of the circle having the equation: x2 - 10x + y2 - 2y + 15 = 0

How big is a teaspoon compared to a regular spoon?

Shella is making a scale model of a monument that is 215 feet tall. She uses a scale of 1 inch = 5 feet. How tall should Sella make her model?

X^2+y^2+3x=0 Find the x and y intercepts

Joan is building a sandbox in the shape of a regular pentagon. The perimeter of the pentagon is 35y4 - 65x3 inches. What is the length of one side of the sandbox? 5y - 9 inches 5y4 - 9x3 inches 7y - 13 inches 7y4 - 13x3 inches

Find the volume of the triangular prism. The base of the triangle is 4cm and the height of the triangle is 6cm. The length of the prism is 3cm