Solve the equation by square root method 16n^2-25=0

n = ±(5/4)

Step-by-step explanation:

The first step is to re-write the equation and make n^2 the subject of the formula; n^2 =25/16. The final step is to take square roots on both sides of the equation and keeping in mind the ± sign

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