Question

Please Help!!!!

Remo needs to buy a countertop for a bathroom. He calculated the area as 10 square feet. The actual area is 9.5 square feet. What is Remo's percentage error?

A) 0.5%
B) 0.95%
C) 5%
D) 5.26%

Answer 1

What do you think the answer is?

Answer 2

i think its 0.5%??

Answer 3

@ShadowLegendX

Answer 4

because if i add 0.5 + 9.5 its 10?

Answer 5

hmm

Answer 6

when the real calculation is just 9.5??

Answer 7

@ShadowLegendX

Answer 8

@ganeshie8 can you please help?

Answer 9

or somebody?? Please :(

Answer 10

C

Answer 11

0.5/10 x100 = 5

Answer 12

The way you calculate Error percentage is you see how "far" the faulty value, in a sense, is from the truth.
Error Percentage = | Wrong - True | / True
where Wrong = the wrong value, True = the true value, and it's absolute because we're considering a displacement. "how far" the answers are, and then the rate of that distance to our truth is the error percentage.

Answer 13

PLEASE DO NOT GIVE OUT THE ANSWER WITHOUT SHOWING WHY. IT IS AGAINST the terms of use guys. sadly, Just like I was, you will get suspended :/

Answer 14

???
im confused because it says the real calculation is 9.5

Answer 15

but i added 9.5 + 0.5 = 10 and 10 is what he put

Answer 16

have you read the lesson yet?

Answer 17

yes @ninjaslice

Answer 18

What does the lesson say?

Answer 19

it says that He calculated the area as 10 square feet. but the actual area is 9.5 square feet. What is Remo's percentage error? its that its 0.5 more

Answer 20

more like he put 0.5 more?

Answer 21

giving him 10 when it supposed to be 9.5

Answer 22

@ninjaslice

Answer 23

I sent a private message.

Answer 24

How much did he miss it by?

Answer 25

he missed it by 0.5 @nelsonjedi

Answer 26

As @LanHikari22 stated:

Error Percentage = | Wrong - True | / \(\color{red}{True}\)
= error/\(\color{red}{True}\)

So what is error, and what is "true"? @KayleeMullins

Answer 27

He calculated the area as 10 square feet. "The actual area is 9.5 square feet".

Answer 28

What is error, and what is "true"?
Once you get these right, you can work out the error percentage.

Answer 29

wait @mathmate

Answer 30

i subtracted 0.5 from 10 giving me 9.5 the real deal is 9.5 so he messed up with just 0.5

Answer 31

square feet

Answer 32

What is error, and what is "true"?

Answer 33

the error is 10 the true is 9.5

Answer 34

Hint: Error is what he thinks it is minus what it really is.

Answer 35

so 10-0.5=9.5

Answer 36

Nice good job!

Answer 37

true=9.5 is correct.

Take an example.
Suppose I am guessing your math grade.
I guessed 95%, and you actually got 98%.
What is true, and what is my error?

Answer 38

your error is 95% but the truth is 98% you missed by just 3% @ninjaslice

Answer 39

@mathmate

Answer 40

My guess is 95%, error is how much I am off, so 95%-98% = 3% is what I am off, or the error. Is that ok?

Answer 41

im confused?

Answer 42

im sorry

Answer 43

* -3%
and error percentage is error/actual=-3%/98%=3%

Answer 44

ohhhh okay! got what you mean! :)

Answer 45

@KayleeMullins
So is that clear to you what is error, and what is actual value ("true")?

Answer 46

Yes :)

Answer 47

Let's get back to the question.
What is error, and what is the true value?

Answer 48

the error is 10 square and the true value is 9.5?

Answer 49

0.5

Answer 50

But i do understand what you trying to say @mathmate :)

Answer 51

and the true value?

Answer 52

Well, perhaps you're busy, or perhaps you got the answer one way or another. It doesn't look like you need my help any more.
Good luck!