Find the value of a for which the straight lines x + y - 4 = 0, 3x + 2 = 0 and x - y + 3a = 0 are concurrent.

The conversion factor relating feet to meters is 1 ft=0.305 m. keep in mind that when using conversion factors, you want to make sure that like units cancel leaving you with the units you need. you have been told that a certain house is 164 m2 in area. how much is this in square feet?

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?