It is important that a room have light during the next month. You want to ensure that the chances of the room going dark are less than 1 in a million. How many lightbulbs should you install in the room to guarantee this if each one has a 94% probability of staying lit during the month. (Round your answer to the nearest whole number.)

answer: y = -12x + 108

step-by-step explanation: do (y = m x+b) formula.

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