Which of the following correctly shows the first step when factoring 3ab + 3ac – 4db – 4dc by grouping?

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.

Four congruent circular holes with a diameter of 2 in. were punches out of a piece of paper. what is the area of the paper that is left ? use 3.14 for pi

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry