The viewer mistakenly determined that one of the equations in the system should be 2 x + y = 28. Instead modifications should have been made before applying the equation.
<h3>What is an Equation ?</h3>
An equation is a mathematical statement formed when two algebraic expressions are equated using an equal sign.
Total Questions = 20
Total Points = 28
Correct Answers = +2 points
Incorrect Answers = -1 point
The viewer represents the correct answers with x and the incorrect ones with y.
x+y = 20
for every correct answers 2 points;
and for every incorrect answers, -1 point
This can be written as
2x-y = 28
The viewer's mistake is that; instead of subtracting total incorrect points from the correct points, the viewer added them together;
now
2x-y = 28
x+y = 20
On adding the equations
]3x = 48
x = 16
y = 4
This means that the contestant answered 16 questions correctly and 4 questions incorrectly
The viewer mistakenly determined that one of the equations in the system should be 2 x + y = 28.
To know more about Equation
brainly.com/question/10413253
#SPJ1
So if 54 is 100% then 200% is double therefore 200% of 54 is 108
Answer:
184
Step-by-step explanation:
I took the amount of children, 461, and subtracted the amount of adults surveyed.
461 - 277 = 184
The 5 movies and 6 video games are for $5.36 cents each.the 3 movies and 2 video games are for $4.20 cents.
please mark brainliest answer!!!!
Hope this helped :)
We have to multiply those measurements to get the area of a living room
10.6 ft * 9.28 ft
98.368 ft^2
