Which condition causes storms to occur?
freezing of water droplets
sudden change in air pressure
condensation of water vapor
rapid heating of upper atmosphere

Are the corresponding angles congruent? explain why or why not.

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f