3=21/(x+5)
Cross multiply
3(x+5)=21
Divide 3
X+5 = 7
Subtract 5
X= 2
Answer:
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804.5cm^3
800 cm^3
Answer:
A positive 11
Step-by-step explanation:
11 is your answer
Using a system of equations, it is found that Carol is 10 years old.
The complete problem is:
"Gerrys age is 5 more than three times Carols age. If the sum of their age is 45, how old is carol?"
<h3>System</h3>
The variables are:
Gerry is <u>5 more than three times Carol's age</u>, hence:
The sum of their ages is 45, hence:
We then use the first equation to find Carol's age:
Carol is 10 years old.
To learn more about system of equations, you can take a look at brainly.com/question/13773803