1). Write an equation for: The difference of a number p and -9 is 12.

The equation for the world problem is

p-(-9)=12 or -9-p = 12

p+9=12

Step-by-step explanation:

The difference of p and -9 can be written as p-(-9), or p+9. "Is 12" just means equals twelve. Hope this helps!

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