6
A force of F→=2xiˆ+2jˆ+3z^2kˆN is acting on a particle. Find the work done by this force in displacing the body from (1,2,3)m to (3,6,1)m.
28
Oct
A force of F→=2xiˆ+2jˆ+3z^2kˆN is acting on a particle. Find the work done by this force in displacing the body from (1,2,3)m to (3,6,1)m. 1)m. 2 3)m to (3 6 A force of F→=2xiˆ+2jˆ+3z^2kˆN is acting on a particle. Find the work done by this force in displacing the body from (1 October 28, 2020 [...]
3. If 24x is a multiple of 3, where x is a digit, what is the value of x? (Since 24x is a multiple of 3, its sum of digits 6+x is a multiple of 3; so 6+x is one of these numbers: 0, 3, 6, 9, 12, 15, 18, … . But since x is a digit, it can only be that 6+x = 6 or 9 or 12 or 15. Therefore, x = 0 or 3 or 6 or 9. Thus, x can have any of four different values.)
13
Oct
3. If 24x is a multiple of 3, where x is a digit, what is the value of x? (Since 24x is a multiple of 3, its sum of digits 6+x is a multiple of 3; so 6+x is one of these numbers: 0, 3, 6, 9, 12, 15, 18, … . But since x [...]
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-12 ,
… . But since x is a digit ,
15 ,
18 ,
3. If 24x is a multiple of 3 ,
3% ,
6 ,
9 ,
it can only be that 6+x = 6 or 9 or 12 or 15. Therefore ,
its sum of digits 6+x is a multiple of 3; so 6+x is one of these numbers: 0 ,
what is the value of x? (Since 24x is a multiple of 3 ,
where x is a digit ,
x = 0 or 3 or 6 or 9. Thus ,
x can have any of four different values.) ,
1. Plot the following points on a graph sheet. Verify if they lie on a line (a) A(4,0), B(4, 2),C(4,6), D(4, 2.5)
13
Oct
1. Plot the following points on a graph sheet. Verify if they lie on a line (a) A(4,0), B(4, 2),C(4,6), D(4, 2.5) –2/5 0 ) 1. Plot the following points on a graph sheet. Verify if they lie on a line (a) A(4 2 6 B(4 C(4 D(4 October 13, 2020 Category: Chapter 15 - [...]
Refer to Example 13. (i) Complete the following table: (ii) A student argues that ‘there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability 1/11. Do you agree with this argument? Justify your answer.
06
Oct
Refer to Example 13. (i) Complete the following table: (ii) A student argues that ‘there are 11 possible outcomes 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12. Therefore, each of them has a probability 1/11. Do you agree with this argument? Justify your answer. 10 11 and 12. Therefore 3% 4 [...]
A game of chance consists of spinning an arrow, which comes to rest pointing at one of the numbers 1,2,3,4,5,6,7,8 and these are equally likely outcomes, Find the probability that it will point at
06
Oct
A game of chance consists of spinning an arrow, which comes to rest pointing at one of the numbers 1,2,3,4,5,6,7,8 and these are equally likely outcomes, Find the probability that it will point at 2 3% 4 5 6 7) 8 and these are equally likely outcomes A game of chance consists of spinning an [...]
The table below- shows the daily expenditure on food of 25 households in a locality. Daily expenses (in Rs.) 100-150 150-200 200-250 250-300 300-350 No. of households 4 5 12 2 2 Find the mean daily expenses on food by a suitable method.
06
Oct
The table below- shows the daily expenditure on food of 25 households in a locality. Daily expenses (in Rs.) 100-150 150-200 200-250 250-300 300-350 No. of households 4 5 12 2 2 Find the mean daily expenses on food by a suitable method. 1 10-12 12-14 Number of houses 1 2 2-4 3 Which method [...]
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1 ,
10-12 ,
12-14 Number of houses 1 ,
2 ,
2-4 ,
3 Which method did you use for finding the mean ,
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5 ,
6 ,
6-8 ,
8-10 ,
A survey was conducted by a group of students as a part of their environment awareness programme ,
and why? ,
in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Number of Plants 0-2 ,
In a retail market, fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying number of mangoes. The following was the distribution of mangoes according to the number of boxes. Find the mean number of mangoes kept in a packing box. Which method of finding the mean did you choose?
06
Oct
In a retail market, fruit vendors were selling mangoes kept in packing boxes. These boxes contained varying number of mangoes. The following was the distribution of mangoes according to the number of boxes. Find the mean number of mangoes kept in a packing box. Which method of finding the mean did you choose? 1 10-12 [...]
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1 ,
10-12 ,
12-14 Number of houses 1 ,
2 ,
2-4 ,
3 Which method did you use for finding the mean ,
4-6 ,
5 ,
6 ,
6-8 ,
8-10 ,
A survey was conducted by a group of students as a part of their environment awareness programme ,
and why? ,
In a retail market ,
in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Number of Plants 0-2 ,
A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Number of Plants 0-2, 2-4, 4-6, 6-8, 8-10, 10-12, 12-14 Number of houses 1, 2, 1, 5, 6, 2, 3 Which method did you use for finding the mean, and why?
06
Oct
A survey was conducted by a group of students as a part of their environment awareness programme, in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Number of Plants 0-2, 2-4, 4-6, 6-8, 8-10, 10-12, 12-14 Number of [...]
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1 ,
10-12 ,
12-14 Number of houses 1 ,
2 ,
2-4 ,
3 Which method did you use for finding the mean ,
4-6 ,
5 ,
6 ,
6-8 ,
8-10 ,
A survey was conducted by a group of students as a part of their environment awareness programme ,
and why? ,
in which they collected the following data regarding the number of plants in 20 houses in a locality. Find the mean number of plants per house. Number of Plants 0-2 ,
The vertices of triangle ABC are A (4, 6), B (1, 5) and C (7, 2). A line is drawn to intersect sides AB and AC at D and E respectively ,such that AB/AD = AC/AE = 4/1. Calculate the area of the △ADE and compare it with the area △ABC ?
05
Oct
The vertices of triangle ABC are A (4, 6), B (1, 5) and C (7, 2). A line is drawn to intersect sides AB and AC at D and E respectively ,such that AB/AD = AC/AE = 4/1. Calculate the area of the △ADE and compare it with the area △ABC ? 2). A line [...]
Find the ratio in which the line segment joining the points (-3, 10) and (6,-8) is divided by (- 1, 6).
05
Oct
Find the ratio in which the line segment joining the points (-3, 10) and (6,-8) is divided by (- 1, 6). -8) is divided by (- 1 10) and (6 6 Find the ratio in which the line segment joining the points (-3 October 5, 2020 Category: Chapter 7 - Coordinate Geometry , Maths , [...]