OpenStudy (anonymous):

3 years ago
OpenStudy (anonymous):

Sheila is redecorating her room. She measured and cut a strip of wallpaper border that was seventy-four inches long for a span of wall that was actually only seventy inches long. What was the percent error in Sheila's measurement, to the nearest whole percent?

3 years ago
OpenStudy (anonymous):

the answer i got is 4%

3 years ago
OpenStudy (anonymous):

I got 5.5%. 70/74=94.45. 100-94.45=5.5

3 years ago
OpenStudy (calculusxy):

$\frac{ |approximate - exact| }{ |exact| } \times 100$

3 years ago
OpenStudy (calculusxy):

you did get the approximate - exact, but you have to divide 4/70 and then multiply by 100 to get the percent error

3 years ago
OpenStudy (anonymous):

5.71 approx

3 years ago
OpenStudy (calculusxy):

understood?

3 years ago
OpenStudy (anonymous):

yes an so it 17.5 right

3 years ago
OpenStudy (calculusxy):

did you divide 4/70 correctly?

3 years ago
OpenStudy (calculusxy):

because if you did, then you would have gotten 5.71%.

3 years ago
OpenStudy (calculusxy):

is that okay?

3 years ago
OpenStudy (anonymous):

yea but dats not the answer three percent four percent five percent six percent

3 years ago
OpenStudy (calculusxy):

well then, you have to round it. if you round 5.71% you will get 6%

3 years ago
OpenStudy (anonymous):

Oh ok , i think i calculate in my head worng

3 years ago
OpenStudy (calculusxy):

no problem :)

3 years ago
OpenStudy (anonymous):

next time when have problems an i will mention u ok

3 years ago