Question

5.
e
The scores in mathematics test (out of 25) of 15 students is as follows
19.25 23, 20, 09, 20, 15, 10, 5, 16, 25, 20, 24, 12, 20 find the made and medi
are they same?
6. Solve the following questions-
2y+5/2 = 37/2
Question-9 ABC is a triangle right angled at C. If AB= 25cm and AC= 7cm, find = BC?
Question-10 If ADEF ABCA, write the part of ABCA that correspond to?
4. DF
1. ZE
2. EF
3. ZF
Hestion-11 (a.) In a city 30% are females, 40% are males and remaining are childr
rcent are children?
b. Find 15% of 250?
estion-12 Organise the following marks in a class assessment in a tabular form
- 7,5, 3, 5, 4, 5, 2, 6, 2, 5, 1,9,6, 5, 8, 4, 6, 7
1. Which number is the highest?
Which number is the lowest?
Which is the range of the data?
Find the arithmetic mean?
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Answer 1

Answer:

6) 8

Step-by-step explanation:

2y=37/2-5/2

2y=32/2=16

y=16/2=8

Answer 2

Que 6) -: Solve the following questions-

2y+5/2 = 37/2

Answer -:

2y + 5/2 = 37/2

2y = (37/2) - (5/2)

3y = (37-5)/2

2y = 32/2

2y = 16

y = 16/2

y = 8

Que 9) ABC is a triangle right angled at C. If AB= 25cm and AC= 7cm, find = BC?

ANSWER -:

In right angle triangle ABC

h 2 = b 2 +p 2

AB 2 = (BC) 2 +(AC) 2

(25) 2= (x) 2 +(7) 2

625 = (x) 2 + 49

625 − 49 = x 2

_/576 = x

x = 24cm

Thus BC is 24cm

Que 10) If ADEF ABCA, write the part of ABCA that correspond to?

4. DF

1. ZE

2. EF

3. ZF

answer -:

Given: Δ DEF ≅ Δ BCA.

(i)∠ E ↔ ∠ C

ii) EF↔ CA

(iii) ∠ F↔ ∠ A

(iv) DF↔ BA

Que 11) In a city 30% are females, 40% are males and remaining are childr

rcent are children?

b. Find 15% of 250?

answer -:

Percentage of children =100% −(30% + 40%)

=100% −70 %

=30% (Ans)

Que 12) Organise the following marks in a class assessment in a tabular form

- 7,5, 3, 5, 4, 5, 2, 6, 2, 5, 1,9,6, 5, 8, 4, 6, 7

• Which number is the highest?
• Which number is the lowest?
• Which is the range of the data?
• Find the arithmetic mean?

answer -:

i) 9 is the highest

ii) 1 is the lowest

iii) Range = maximum - minimum

iv) Arithmetic mean = fx / f = 100 / 20 = 5

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