Using the letters in the word addition, find the number of permutations that can be formed using 3 letters at a time.

84 words.  

Step-by-step explanation:

We are asked to find the number of permutations that can be formed using 3 letters at a time, using the letters in the word ADDITION.    

Since order matters in permutations, so the repetition of same words is not allowed.    

The number of permutations of n objects taken r at a time is determined by the following formula:  

Since 2 letters are repeated so we can choose 3 letters from 8 letters as:

Therefore, there are 84 words that can be formed using 3 letters at a time.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.