What are the coordinates of the orthocenter of △DEF with vertices at D (-1, 2), E (-1, - 4), and F (2, - 4) ?

A 56 inch board is cut into the pieces so that the second piece is 3 times as long as the first piece and the third piece is 4 times as long as the first piece. If x represents the length of the first piece find the lengths of all 3 pieces

I need to figure how much money I have if u have 200 quarters

a factory makes 640 brushes in 4 hours. Does the equation y=150x model the number of brushes made each hour?

How many pairs of parallel sides does the trapezoid have?

A bag contains 49 marbles, some red and some transparent. The ratio of red marbles to transparent ones is 5 : 2. How many transparent marbles are there?

What are vertical angles examples

Find the area of a trapoziod

2 ½ pounds of grass seed will cover 600 square feet of soil. How many pounds of seed are needed to cover 800 square feet? A. 2 3/4 B. 3 C. 3 1/3 D. 3 1/2

What do 8:5 16:10. 24:15 what do these ratios have in common.

Is 70 thousand written in a standard form or a word form? explain