Solve the system:
3x+6y=51
y=40-5x

Write down your solution here

You’re repairing a large rectangular aquarium. the final step is to cover the glass with a protective film. the front and back of the aquarium measure 4 meters by 2 meters, and the sides of the aquarium measure 3 meters by 2 meters. how many square meters of protective film do you need? ( )

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.

Which of the following vectors are orthogonal to (2,1)? check all that apply