Elective Maths 16
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Question 1 of 20
1. Question
Calculate
=0.1.
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Question 2 of 20
2. Question
Find the average rate of change of the function
in the interval [-3,-2].
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Question 3 of 20
3. Question
Which of the following bearing give the direction of the vector
?
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Question 4 of 20
4. Question
If a =3i +4j and b=10i -2j, find b -2a.
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Question 5 of 20
5. Question
Find the angle between i+5j and 5i-j.
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Question 6 of 20
6. Question
Find a•b, if a=4i+7j and b=3i-5j
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Question 7 of 20
7. Question
Given that
and
are orthogonal , find k
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Question 8 of 20
8. Question
A vector v has initial points (4,-3) and end point (-2,4). Find the vector representation of vector v.
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Question 9 of 20
9. Question
A vector v has initial points (4,-3) and end point (-2,4). Find the magnitude of the vector v
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Question 10 of 20
10. Question
If u,v and w are vectors, which of the following is a valid operation?
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Question 11 of 20
11. Question
If
find
.
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Question 12 of 20
12. Question
Find the mean of 12,7,4,18,6,12,11 9, 9, 7
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Question 13 of 20
13. Question
A certain construction company has 75 casual workers; 30 earn $1,500 a day and 45 earn $950 a day. Calculate the average earning per day.
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Question 14 of 20
14. Question
Which of following method could be used in frequency the distribution when class sizes are not equal?
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Question 15 of 20
15. Question
Indicate which of the following statements is/are true.
I. The range is a measure of dispersion and its calculation takes into account every unit in the data.
II. The mean is always unique, that is, a set of data has one and only one mean.
III. When we plot class frequencies (vertical axis) against class marks, we obtain a graph known as the
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Question 16 of 20
16. Question
The set of numbers 3, 5, 6, 8, 5, 9 has a mean 6. Calculate the standard deviation.
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Question 17 of 20
17. Question
The marks of eight students in a test are 10, 4, 5, 3, 14, 13, 16.and 7. Find the range of the marks.
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Question 18 of 20
18. Question
The mean of 12 numbers is 18. If each of the numbers is increased by 4, what is the new mean?
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Question 19 of 20
19. Question
In how many ways can a committee of 5 men and 3 women be chosen from 8 men and 5 women?
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Question 20 of 20
20. Question
Given that n =3, evaluate:
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