Let c be children and a adults.
3.5c + 7a = 1771 (the total revenue is equal to the amounts made off of people)
c + a = 331 (total number of people)
The second formula becomes a = 331 - c. This can be substituted into the first formula.
3.5c + 7(331 - c) = 1771 = 7*331 - 3.5c = 1771. 7*331 = 2317, so 3.5c = 2317 - 1771 = 546.
546/3.5 = 156 = c (number of children).
c + a = 156 + a = 331 => a = 331 - 156 = 175 (number of adults).
There are 156 children and 175 adults
Hey there!
The answer to your question is 
Given:
First, we can start by adding like terms. The following are like terms:
Now, we can add these pairs together, giving us:
Now, add all this together, and we get our answer as:
Have a terrificly amazing day!
Answer:
Step-by-step explanation:
x^2 + 3x - 10 = 0
(x - 2)(x + 5) = 0
x - 2 = 0 x + 5 = 0
x = 2 x = -5
smaller x = -5
larger x = 2
Steps to solving equations:
Simplify/combine the like terms
Isolate the variable (Get the variable on one side
Solve for the variable
-2y - 7 + 5y = 13 - 2y Simplify/Combine terms
3y -7 = 13 - 2y Isolate variable by adding 2y to both sides
5y - 7 = 13 Add 7 to both sides to get y alone on one side
5y = 20 Divide by 5 on both sides to solve for y
y = 4
You can check your answer by replacing y with 4 in the original equation.
