Determina la pendiente de
1,10, 13,23,25

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

If 20% of a number is 35, what is 50% of that number?

James adds two numbers a + b. sally adds the same two numbers but reverse the order b + a what property of addition assures us that james and sally will get the same sum