Adrug test is accurate 96% of the time. if the test is given to 1900 people who have not taken drugs, what is the probability that at least 79 will test positive?

Solve the equation 3x2 + 19x + 9 = 0 to the nearest tenth.

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.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.