On her English test, Michelle answered 40 questions correctly, answered 5 questions incorrectly, and left 5 questions unanswered. What percentage of the test questions did Michelle answer incorrectly?

10%

Step-by-step explanation:

40+5+5=50

50-5=45

45*2=90

50*2=100

100-90=10

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

answer: rolling a number cube and flipping a coin.

step-by-step explanation: