The number is prime The number is less than 19 and The sum of the digits of the number is greater than 7

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

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