20o
25o
50o
80o
Correct answer is B
< OUT = < OTU
< OUT = \(\frac{180^o - 70^o}{2} = \frac{110^o}{2} = 55^o\)
< RUT = 180o - 100o = 80o
< RUO = < RUT - < OUT
= 80o - 55o
= 25o
in the diagram above, calculate the value of x.
60o
100o
120o
140o
Correct answer is C
No explanation has been provided for this answer.
x \(\geq\) 2
0 \(\geq\) x \(\geq\) 2
-2 \(\geq\) x \(\geq\) 0, x \(\leq\) 2
x \(\geq\) -2, 0 \(\geq\) x \(\geq\) 2
Correct answer is C
No explanation has been provided for this answer.
68%
28%
17%
8%
Correct answer is B
\(\begin{array}{c|c} \text{class-marks(x)} & \text{(freq. (f)} & \text{cum. freq.}\\\hline 9 & &3.....3\\14 & & 6....3 + 6 = 9\\ 19 & & 9.....9 + 9 = 18\\ 24 & & 3.....18 + 3 = 21\\ 29 & & 2.....21 + 2 = 23\\ 34 & & 2.....23 + 2 = 25\\ & & 25\end{array}\)
% of students scoring more than 20 marks
= \(\frac{7}{25}\) x 100% = 28%
20
21
15
18
Correct answer is A
\(\begin{array}{c|c} \text{Age in years} & 10 & 20 & 30 & 40 & 50 \\\hline \text{frequency} & 3 & 4 & 5 & 6 & 2\end{array}\)
\(\sum f \) = number of people involved in the pollution
\(\sum f\) = 3 + 4 + 5 + 6 + 2 = 20
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