Consider triangle DEF with vertices D(1,1,1), E(1,-5,2) and F(-2,2,7).
1. Find
Then
2. Find
Then
3. Find
Then
4.
Ahmed is riding the elevator in a building. The building has floors above and below ground level. Ahmed uses the expression belo
w to describe his movement.
6 + (negative 8)
Which statement could describe Ahmed’s movement?
6 + (negative 8)
Which statement could describe Ahmed’s movement?
2 answers:
Answer:
As the Options are not given
6 + (-8)
It means Ahmed is on the Sixth floor, above the ground floor and then goes 8 floor Downwards which is 2 level below the ground floor.
The Answer in form of numbers is = -2
Because when we add a positive integer and a negative integer , we just subtract smaller integer from larger integer , and keep that sign before the result which the larger number bears.
6 + (-8)=
8 is larger integer which bears negative sign.
One integer is positive and another one is negative,
8 -6= 2
So, 6 + (-8) = -2 →→ 2 level below the ground level
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5 People can be chosen in 1287 ways if the order in which they are chosen is not important.
Step-by-step explanation:
Given:
Total number of students= 13
Number of Students to be selected= 5
To Find :
The number of ways in which the 5 people can be selected=?
Solution:
Let us use the permutation and combination to solve this problem
So here , n =13 and r=5 ,
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