Step-by-step explanation:
1/ 3 is the probability of getting one head
Check the solution of all options
First option
p + 2 1/2 = 5
p = 5 - 2 1/2
p = 5 - 5/2
p = 10/2 - 5/2
p = 5/2
p = 2 1/2
Second option
2 + p = 2 1/2
p = 2 1/2 - 2
p = 1/2
Third option
p - 2 1/2 = 5
p = 5 + 2 1/2
p = 7 1/2
Fourth option
4 - p = 2 1/2
-p = 2 1/2 - 4
-p = 5/2 - 4
-p = 5/2 - 8/2
-p = -3/2
p = 3/2
p = 1 1/2
The equation that has p = 2 1/2 as its solution is first option
Move the -7 to the right, its sign will flip (do you know why?)
Negate both sides to change -x to x
-x = 16+7
-x = 23
x = -23
25d^2-30d-35d+42=25d^2-65d+42.
Answer:
less than 256
Step-by-step explanation:
Rule of 3. They were more than 50% of the tickets that were for students.
511*50/100 = 255,5
That means that less than 256 tickets were adult tikets
