Suppose q and r are independent events. find p(q and r) if p(q) = and p(r) = ?

a. 4/15
b. 11/15
c. 109/105
d. 15/29

it happens during combustion and impacts the environment because the plants and trees take in that and it can cause them to die.

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x