This year, 72 students completed projects for the science fair. This was 23 more students than last year. How many students completed projects for the science fair last year? Im marking the first one i see the brainliest (or however you spell it bc it isnt a real worl lol)

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

Through non-collinear points there is exactly one plane.

Evaluate the expression. (9 + 5)(3 + 2)0