Answer:
- 40 popcorns and 90 pretzels sold.
============
Let the number of popcorns is x and pretzels is y.
Set up equations:
- x + y = 130
- 2.5x + 2y = 280
Solve by elimination, multiply the first equation by 2 and subtract from the second equation:
- 2.5x + 2y - 2x - 2y = 280 - 2*130
- 0.5x = 280 - 260
- 0.5x = 20
- x = 20/0.5
- x = 40
Find y:
- 40 + y = 130
- y = 130 - 40
- y = 90
Answer:
a^(-2 3/5)
Step-by-step explanation:
When you multiply two numbers together with the same base, you can add the two exponents together. In this case,
. Hope this helps!
Your question doesn't really make since but... 1/2(x+) - 1/3y.
Answer: the answer will be 24/15
Step-by-step explanation: