Answer:
D. 2(√{x} + √{x - 2})
Step-by-step explanation:
As hinted in the question, we have to simplify the denominator.
To understand it easier, let's imagine we have x - y in the denominator. If we multiply it with x + y we'll get x² - y², right? Check the next line:
(x - y) (x + y) = x² + xy -xy - y² = x² - y²
If we have the square of those nasty square roots, it will be much simpler to deal with. So, let's multiply the initial fraction using x+y, but with the real values:
Then we simplify:
Answer is D. 2(√{x} + √{x - 2})
let x - number of $26 tickets
y- number of $40 tickets
x + y = 5000
x = 5000 - y
26x + 40y = 155,200
26(5000 - y) + 40y = 155200
130,000 - 26y + 40y = 155200
14y = 25,200
y = 1800
x = 5000 - 1800 = 3200
Im pretty sure its C
hoped i helped
Answer:
it's 6
Step-by-step explanation:
You can think of it 2 ways the first one is called the "bat and ball" method which is 12x15 then u divide it by 30. The other methos only works on very few if you look at the 30/15 one 15 is half of 30 so when you look at 12 half of that would be 6. Hope this helps :)