+0

# math

+1
203
3
+701

http://prntscr.com/lax3xl

just tell me how it works and i will work it out

Oct 26, 2018
edited by critical  Oct 26, 2018

#1
+100828
+3

With the first on I would just graph it.

Put the time on the horizongal (bottom) axis and temperature on the vertical axis.

Oct 26, 2018
#2
+100828
+1

Hi Critical,

In future could you please put only one question per post.

second question -

82+88+91+83 = 344

(344+F)/6   will give the score out of 100  (percentage)

So if he scores a B in what range will F have to lie?

$$80\le \frac{344+F}{6}\le 89$$

Anyway, since only on is an outlier it must be the highest or the lowest one!

So if you totally guess you would have 50% chance of getting it right  :)

Also this means that you only need to check one end, it is either the one that you want or else it must be the one at the other end :)

Oct 26, 2018
edited by Melody  Oct 26, 2018
edited by Melody  Oct 26, 2018
edited by Melody  Oct 26, 2018
#3
+1414
+2

Solution:

$$\text {Hugo can receive a maximum of 600 points for all tests. }\\ \text {The lowest “B” score is } (0.80 * 600) = 480 \text { points. }\\ \text {The highest “B” score is } (0.899 * 600) =539 \text { points. }\\ \text {Total points for the first four tests are } (82) + (88) + (91) + (83) = 344 \\ \text {For a “B” grade, the final score (F) must have a range of }\\ (479-344) \ge (F) \lt (540-344)\\ \hspace{2.6em} (135) \ge (F) \lt (196)\\ \; \\ \text {Answer “K” exceeds this range. }\\$$

GA

Oct 27, 2018