What the answer to this

Solve this system of two linear equations using the linear combination method?

2x-5y=18

y-x=-10

Angel runs 4 miles per day. What is the relationship between the number of days and how many miles he has run? A. cannot be determined B. proportional C. non-proportional D. ratio

Three snack bars contain 1/5, 0.22, and 19% of their calories from fat. Which snack bar contains the least amount of calories from fat?

The hydra was a one-headed monster but when iris cut off, 2 heads grow back in its place. If a hero tried to conquer it by cutting off its head every day, how many heads would the hydra have on the third day?

Tia and her friends are going to the ice skating rink. Each person pays $5 for admission and $5 for food. Write and evaluate a numerical expression to find the total cost admission and food.

You earn $30,000 per year, and the federal tax rate is 10 percent. Your net income is A. $3,000 B. $17,000 C. $27,000 D. $30,000

What is the expanded form for 3.4

Two skaters all racing toward the finish line of a race the first skater has for team lead and is traveling at a rate of 12 meters per second the second skater is traveling at a rate of 14 meters per second how long will it take for the second

The palo duro canyon is 120 miles long, as much as 20 miles wide, and has a maximum depth of more than 0.15 mile. What is the approximate volume of this canyon?

Square root of 20 is it rational or irrational? square root of 24 is it rational or irrational? square root of 61 is it rational or irrational? square root of 62 is it rational or irrational? square root of 101 is it rational or irrational?

Find the unit rate with the second given unit in the denominator. 1090 heartbeats in 15 min