What is the conjugate?
1.) √8- √9
2.) 2x^2+ √3
3.)a- √a-1
4.) √x+2 √b

You are making a battery for a science project. you have copper wire for your first electrode. you need to choose a conductor, a second electrode, and a device to plug into your battery. you have already chosen a lemon conductor. complete each statement below about the options that include a lemon conductor.

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

Which function has the vertex at (2,6)