Match the vocabulary word with its definition. 1. an expression that uses variables to state a rule evaluate 2. to replace a variable in a mathematical expression with an actual value substitute 3. to find the value of a mathematical expression using the order of operations formula 4. what a number or expression is worth expression 5. a single term; multiple terms connected by an addition or subtraction sign value

its 69.420

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