Normally when you're gathering sources it depends on what the topic is, what time or day, you try to find facts, and you see if there are any other useful information.
Variables:
cost of 1 hot dog = x
cost of 1 hamburger = y
Set up a system of equations and use substitution
x + y = 2.75
x + 7y = 11.75
x + y = 2.75 can be rewritten as y = -x + 2.75
x + 7 (-x + 2.75) = 11.25
-6x + 19.25 = 11.25
-6x = -8
x = .75
plug x back into other equation to find y
y = -.75 + 2.75
y = 2.00
1 hot dog = $0.75
1 hamburger = $2.00
One essential feature of the normal distribution is that its graph is SYMMETRIC
Answer: 3/4
Step-by-step explanation: evalute the exponet which is 36 add the numbers then evalute again the mutiply then divide.
