All else being equal, a study with which of the following error ranges would be
the most reliable?

A. 117 percentage points
B. 7 percentage points
C. 112 percentage points
D. +2 percentage points

side side side

side angle angle

angle side angle

side angle side

step-by-step explanation:

answer is 67%

step-by-step explanation:

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