Answer: Mackenzie bought 7 bags of popcorn and 10 candies.
Step-by-step explanation:
Let x represent the number of bags of popcorn that Mackenzie bought.
Let y represent the number of candies that Mackenzie bought.
She bought a total of 17 bags of popcorn and candies altogether. This means that
x + y = 17
She bought $99.50 worth of bags of popcorn and candies. Each bag of popcorn costs $8.50 and each candy costs $4. This means that
8.5x + 4y = 99.5- - - - - - - - - - - - - - 1
Substituting x = 17 - y into equation 1, it becomes
8.5(17 - y) + 4y = 99.5
144.5 - 8.5y + 4y = 99.5
- 8.5y + 4y = 99.5 - 144.5
- 4.5y = - 45
y = - 45/ - 4.5
y = 10
x = 17 - y = 17 - 10
x = 7
The answer is 7 because the mean is an average. So if you add up all the numbers and then divide that number by the amount of numbers listed then that will get you your answer which is 7
4+5+6+7+8+9+10=49
49/7=7
Answer:
I use app called math
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Step-by-step explanation:
