Louisa used a gift card to pay for 3 meals

A system of identifying call letters uses call letters that begin either with E or W. Some have a total of 2 letters, and others

Klio2033 [76]

Answer:

If repetition is allowed then the different call letters possible are 1404.

If repetition is allowed then the different call letters possible are 1250.

Step-by-step explanation:

The call letter are of either 2 letter or 3 letters.

And for them to be identified they should start with either E or W.

If Repetition is allowed:

Consider the call letters with 2 letter:

Possible number of call letters starting with E : E _

The second place can be filled any of the 26 letters.

Possible number of call letters starting with W : W _

The second place can be filled any of the 26 letters.

Consider the call letters with 3 letter:

Possible number of call letters starting with E : E _ _

The second place and third place can be filled with any of the 26 letters.

Possible number of call letters starting with W : W _ _

The second place and third place can be filled with any of the 26 letters.

Total number of possible letters: 26 + 26 + (26)² + (26)² = 1404

Thus, if repetition is allowed then the different call letters possible are 1404.

If Repetition is not allowed:

Consider the call letters with 2 letter:

Possible number of call letters starting with E : E _

The second place can be filled any of the 25 letters.

Possible number of call letters starting with W : W _

The second place can be filled any of the 25 letters.

Consider the call letters with 3 letter:

Possible number of call letters starting with E : E _ _

The second place can be filled with any of the remaining 25 letters and the third can be filled with the remaining 24 letters.

Possible number of call letters starting with W : W _ _

The second place can be filled with any of the remaining 25 letters and the third can be filled with the remaining 24 letters.

Total number of possible letters: 25 + 25+ (25 × 24) + (26 × 24) = 1250

Thus, if repetition is allowed then the different call letters possible are 1250.

5 0

3 years ago

What are the values of a and b in the equation

Elenna [48]

Answer:

Anser is A

Step-by-step explanation:

The image shows a stationary train indicated by letter A and a moving train, indicated by letter B. If the person standing at the train station hears sounds coming from both trains, which explanation best predicts tThe image shows a stationary train indicated by letter A and a moving train, indicated by letter B. If the person standing at the train station hears sounds coming from both trains, which explanation best predicts tThe image shows a stationary train indicated by letter A and a moving train, indicated by letter B. If the person standing at the train station hears sounds coming from both trains, which explanation best predicts tThe image shows a stationary train indicated by letter A and a moving train, indicated by letter B. If the person standing at the train station hears sounds coming from both trains, which explanation best predicts t

4 0

3 years ago

Find dy/dx by implicit differentiation. 3x + y = 8 + x2y2

Vlada [557]

3 +dy/dx = 0+ 2x²ydy/dx + 2xy²
dy/dx - 2x²ydy/dx = 2xy² -3
(1 - 2x²y) dy/dx = (2xy²-3)/(1-2x²y)

8 0

4 years ago

You can get 4 value meals for 21.88 at the restaurant how much is each value meal?

GuDViN [60]

Answer:

$5.47 each meal

Step-by-step explanation:

21.88 divided by 4 equals 5.47

3 0

3 years ago

Read 2 more answers

Please Help! A group of tourists can be sorted into tour boats in groups of 4 or in groups of 6. In either case, there are no em

ozzi

Answer:

36 is the correct answer.

Step-by-step explanation:

It is given that there are a group of tourists that can be sorted in a group of either 4 or 6 so that there are no empty seats.

It means that the total number of seats should be a multiple of both 4 and 6.

For finding such a number we can simply find out LCM (Least Common Multiple) of 4 and 6.

LCM of two numbers p and q is the minimum number which can be completely divided by both the numbers p and q.

Let us find the LCM of 4 and 6 here, using the factors:

4 = 2 $\times$ 2

6 = 2 $\times$ 3

The common factor(shown as underlined) is used only once in the LCM.

So, LCM = 2 $\times$ 2 $\times$ 3 = 12

So, 12 is the minimum number which can be divided by 4 and 6 both.

But, we are given a condition that number of tourists are more than 25 and lesser than 45. So, the number of seats can be in between 25 and 45.

Now, let us see multiples of 12:

12, 24, 36, 48, 60, ......

The number that lies between 25 and 45 is 36.

So, the number of total seats can be 36.

5 0

4 years ago