Find the slope of the line passing through the points (-3, 7) and (2, -6)
1 answer:
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Question 1
There are 5 letters (B, O, K, E, R) and there is a total of 10 letters to make up the word.
There are
ways of arranging the letters, which equal to 210 ways
Question 2
There are seven swimmers in total.
There are
ways of choosing the first winner, which is 7 ways
There are
ways of choosing the second winner, which is 6 ways
There are
ways of choosing the third winner, which is 5 ways
There are 7×6×5=210 ways of choosing first, second, and third winner
Question 3
The probability of eating an orange and a red candy is
×
, which equals to 
The probability of eating two green candies is
×
which equals to 
There are 5 letters (B, O, K, E, R) and there is a total of 10 letters to make up the word.
There are
Question 2
There are seven swimmers in total.
There are
There are
There are
There are 7×6×5=210 ways of choosing first, second, and third winner
Question 3
The probability of eating an orange and a red candy is
The probability of eating two green candies is
Answer:
(a) 720 ways
(b) 120 ways
(c) 24 ways
Step-by-step explanation:
Given
--- number of letters
Solving (a): Number of arrangements.
We have:
So, the number of arrangements is calculated as:
This gives:
This gives:
Solving (b): DA as a unit
DA as a unit implies that, we have:
[DA] N C E R
So, we have:
So, the number of arrangements is calculated as:
This gives:
This gives:
Solving (c): NCE as a unit
NCE as a unit implies that, we have:
D A [NCE] R
So, we have:
So, the number of arrangements is calculated as:
This gives:
This gives: