Question

40/
than to return downstream at the same spot. Find the specu ulu
For the following frequency distribution, draw a cumulative frequency curve of more than
type' and hence, obtain the median.
10 -10
Class
Frequency
quency
10-20
15
20 - 30 T 30 - 40
20
23
40-50
17
50-60
11
60 - 70
9
1
OR​

Answer 1

Answer:

In △ABC AB=AC

⇒∠B=∠C (Angles opposite to equal sides are equal)

Now using angle sum property

∠A+∠B+∠C=180

∘

⇒80

∘

+∠C+∠C=180

∘

⇒2∠C=180

∘

−80

∘

⇒∠C=

2

100

∘

=50

∘

now ∠C+∠x=180

∘

(Angles made on straight line (AC) are supplementary)

⇒50

∘

+∠x=180

∘

⇒∠x=180

∘

−50

∘

=130

∘

@ARSH

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