Which of the following represents the sample space for flipping 2 coins, one after the other?

A. HH, HT, TH, TT
B. HH, TT, both
C. HT, TT, HH
D. H, T

At $1.32 million, they closed last month percent above what they paid in 2007." how much did they pay in 2007?

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

What are the solutions for the following system? -2x^2+y=-5 y=-3x^2+5