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Answers
Answer:
Q.11) 106
Q.12) 0.025
Q.13) Mode is 2
Q.14) n = 14
Q.15) Sum of angles = 180°
Step-by-step explanation:
Q.11
Let the number be x
Thus, according to the Question
(-53) + x = 53
x = 53 - (-53)
x = 53 + 53
x = 106
Q.12
We know that,
a ÷ b = a × (1/b)
So,
0.25 ÷ 10 = 0.25 × (1/10)
also,
0.25 = 25/100
Thus,
(25/100) × 1/10
= 25/1000
= 0.025
Q.13
Mode is the number which is repeating the most.
Here, if we rearrange it we get,
1, 1, 1, 2, 2, 2, 2, 3, 4, 4
Here,
1 is repeating 3 times
2 is repeating 4 times
3 comes only once
4 is repeating 2 times
∴ 2 is the mode of the data, since it repeating the most.
Q.14
Given,
n + 5 = 19
n = 19 - 5
∴ n = 14
Q.15
We know that,
Two angles are said to be supplementary, only if they add upto 180°.
∴ Sum of the angles = 180°
Hope it helped and believing you understood it........All the best