Answer:
im not able to do that question it is confusing
Step-by-step explanation:
Answer:
3 &4
Step-by-step explanation:
Answer:
Step-by-step explanation:
Keep 
and group -3x+8x which becomes 5x. Then keep -6.
Then it becomes the answer above.
Answer:
210
Step-by-step explanation:
Here comes the problem from Combination.
We are being asked to find the number of ways out in which 3 students may sit on 7 seats in a row. Please see that in this case the even can not be repeated.
Let us start with the student one. For him all the 7 seats are available to sit. Hence number of ways for him to sit = 7
Let us see the student second. For him there are only 6 seats available to sit as one seat has already been occupied. Hence number of ways for him to sit = 6
Let us see the student third. For him there are only 5 seats available to sit as two seat has already been occupied. Hence number of ways for him to sit = 5
Hence the total number of ways for three students to be seated will be
7 x 6 x 5
=210
The pair of points that are equal to x coordinates is (0,0)
