Mrs. Burke's Chemistry Class Academic Year
Chemistry Majors Non-Chemistry Majors
16
18
Freshmen
11
16
Sophomores
Juniors
15
13
Seniors
14
10
Step 1 of 2: What is the probability that she selects a chemistry major, given that she chooses randomly from only the juniors? Enter
a fraction or round your answer to 4 decimal places, if necessary.

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

the answer is b