Which method of gathering data will be most effective in learning how diet and fitness choices affect long-term health? a. an experiment b. an observational study c. a sample survey d. a census

Which value of m will create a system of parallel lines with no solution? y= mx - 6 8x - 4y = 12

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

Which of the following statements must be true about this diagram? check all that apply. x°, y°, z°, & w°