Evaluate the expression below when x= -2

-1

Step-by-step explanation: To evaluate this problem, the first thing we want to do is plug in the appropriate value for x.

When we do that, we get

A good rule of thumb for problems that involve division bars is to simplify what's above the division bar as much as you can and what's below the division bar as much as you can before you do your dividing.

So up top if we follow our order of operations, the first thing we want to do is square the -2 before we subtract. So -2² is +4.

So in our numerator we have 4 - 8.

Down below, we have -2 + 6 which is +4.

4 - 8 is -4 and -2 + 6 is +4.

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

$5.41

step-by-step explanation:

$20 - $14.51 = $5.49.