Andy is hanging wallpaper in his kitchen. He is able to cover of the walls in the room using 6 rolls of wallpaper. What is the n
2 answers:
Answer:
x= 1.5 rolls
Step-by-step explanation:
We use an algebraic expression to find the solution. Consider that the kitchen has 4 walls of similar characteristics.
Consider the variable x as the number of rolls that each wall requires.
x= number of rolls per wall.
If we say that 4 walls used 6 rolls: 4x =6 rolls
The question is, how many rolls does each wall use?
if we clear the variable x
So= x= 1.5 rolls
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Hey there!
To find percent error, we find the difference between the prediction and the actual value. We take that difference, divide it by the prediction, and multiply it by 100.
So let's find the difference.
42 - 30 = 12
Divide the difference, which is 12, by 30.
12 ÷ 30 = 0.4
Multiply this by 100 to get the percent.
0.4 x 100 = 40
The percent error is 40%.
Hope this helps!