Calculate area of tetrahedron given 4 vertices

Ellis multiplies the dimensions of a rug on a drawing by a scale factor to find the dimensions of the actual rug. The dimensions of the rug on the scale drawing are 2 inches by 3 inches. The dimensions of the actual rug are 36 inches by 54 inches.

Julia went to the movies and spent $15 on her ticket and popcorn, if the popcorn cost $7 how much did her ticket cost?

Miguel's teacher asks him to color for 4/8 of his grid. He must use three colors: red blue and green. There must be more green sections then red sections. How can Miguel color the section service grid to follow all the rules?

Miguel built 38 tables and Asia built 28 tables for a craft fair. At the craft fair, Miguel sold 3 tables each day and Asia sold 2 tables each day.

The expression (6x+18) represents the area of the model below. Which expression could NOT represent the dimensions of the model? A) 3 (x+6) B) 6 (x+3) C) 0.5 (12x+36) D) 0.

What is the total number of kilojules of energy in 1.25 litre bottle?

Find f (g (x)) given that f (x) = 4x + 2 and g (x) = 2x^2

Five times the sum of a number and 4 is - 15

Find the roots 2x2+4x-5=0

Which model represents 3*1/2