How many liters of 80% alcohol solution and 20% alcohol solution must be mixed to obtain 12 liters of 70% alcohol solution? a. complete the table below with the expressions needed to solve this problem. then solve it in part b. 80% solution 20% solution final solution number of liters x y liters of alcohol incorrect incorrect incorrect

there is no table x :

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

- both graphs increase on their domain.

- the graphs of both functions have the same x-intercept.

- neither graph has a y-intercept.