Participants in a study of a new medication received either medication a or a placebo. find p(placebo and improvement). you may find it to make a tree diagram of the problem on a separate piece of paper.

of all those who participated in the study, 80% received medication a.

of those who received medication a, 76% reported an improvement.

of those who received the placebo, 62% reported no improvement.

i don't know how to do this at all, any hints or would be nice. : )

i leave the calculator work to you.

7. diameter 4 miles, circumference 4π miles

8. radius 0.2 miles, circumference 0.4π miles

[this is a bad problem because the actual radius of a car on the track is less than 0.2 miles so the answer is less than 0.4π miles]

9. radius 6 feet, circumference 12π feet

10. diameter 14 cm, circumference 14π cm

11. diameter 4.8 feet, circumference 4.8π feet

step-by-step explanation:

for exempl this   system of equations   y = x - 3

                                                                y = 2x - 5

look   the line : y = x -3     ( red)

                            the line : y = 2x -5 ( bleus)

current in the circuit at time t is /, then the power delivered to the resistor is

step-by-step explanation: