8. [tex]$-11 - (-1)$[/tex]

9. [tex]$6 - (+2)$[/tex]

Directions: Solve these problems. Write an expression.

19. Dara's kite is flying 67 feet high. Jill's is flying 40 feet high. What is the difference between the heights of these two kites?

20. A helicopter hovers [tex]$60 \, \text{m}$[/tex] above the ocean. What is the height of the helicopter relative to sea level?



Answer :

Sure, let's solve the problem given in question 19 step-by-step.

### Problem 19:
Dara's kite is flying 67 feet high. Jill's is flying 40 feet high. What is the difference between the heights of these two kites?

To find the difference between the heights of Dara's kite and Jill's kite, we need to subtract the height of Jill's kite from the height of Dara's kite. Here’s how you can do it step-by-step:

1. Identify the heights:
- Dara's kite height: \(67 \, \text{feet}\)
- Jill's kite height: \(40 \, \text{feet}\)

2. Set up the subtraction problem:
[tex]\[ \text{Height Difference} = \text{Dara's Kite Height} - \text{Jill's Kite Height} \][/tex]

3. Substitute the values:
[tex]\[ \text{Height Difference} = 67 \, \text{feet} - 40 \, \text{feet} \][/tex]

4. Perform the subtraction:
[tex]\[ 67 - 40 = 27 \][/tex]

5. State the result:
[tex]\[ \text{The difference between the heights of the two kites is } 27 \, \text{feet}. \][/tex]

So, the difference in height between Dara's kite and Jill's kite is [tex]\(27 \, \text{feet}\)[/tex].