Answer:
Don't
Step-by-step explanation:
Answer:
rational number
Step-by-step explanation:
Answer: the bill for a hamburger is $0.7
the bill for a salad is $1.5
Step-by-step explanation:
Let x represent the bill for a hamburger.
Let y represent the bill for a salad.
The bill for five hamburgers and four salads is $9.50. This means that
5x + 4y = 9.5- - - - - - - - - - - - - - 1
The bill for four hamburgers and five salads is $10.30. This means that
4x + 5y = 10.3 - - - - - - - - - - - - - -2
Multiplying equation 1 by 4 and equation 2 by 5, it becomes
20x + 16y = 38
20x + 25y = 51.5
Subtracting, it becomes
- 9y = - 13.5
y = - 13.5/ - 9
y = 1.5
Substituting y = 1.5 into equation 1, it becomes
5x + 4(1.5) = 9.5
5x + 6 = 9.5
5x = 9.5 - 6 = 3.5
x = 3.5/5 = 0.7
Answer:
35 interviews
Step-by-step explanation:
1. Find the rate
21/3 = 7 people an hour
2. Find how much she can do in 2 hours
7 x 2 = 14 interviews
3. Add the 2 numbers
21 + 14 = 35 interviews
Answer:
14
Step-by-step explanation:
If 5 percent = 2
35/7 (7 being number that goes into 40)
2x7 = 14
Hope this helps
