Question 1 (f)

Find:

(–32) – (–40)

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Solution

(–32) – (–40) = –32 + 40 = 8

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Similar questions

F - 32 = \frac{9}{5} C

; Given

C = 40^{\circ}

, find F.

Question 8
The mean of the following frequency distribution is 50 but the frequencies $f_{1}$ and $f_{2}$ in classes 20-40 and 60-80, respectively are not known. Find these frequencies, if the sum of all the frequencies is 120.
$\begin{matrix} C l a s s & 0 - 20 & 20 - 40 & 40 - 60 & 60 - 80 & 80 - 100 F r e q u e n c y & 17 & f_{1} & 32 & f_{2} & 19 \end{matrix}$