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4 years ago

How many different ways can you choose 5 books from a shelf containing 12 books? Type a numerical answer in the space provided.

1 answer:

4 0

There are 792 different ways of choosing 5 books from a shelf containing 12 books. This problem can be solved using the combination formula of mathematics. The combination formula of mathematics is a number of way of selecting thing from a collection and the formula stated as n(n-1)...(n-k+1)/k(k-1)...1 (Calculation: 12*11*10*9*8/5*4*3*2*1 = 95040/120 = 792).

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Daisy cut a square out of a sheet of graph paper. The square had an area of 16 square cm. She then trimmed 1 cm from each side o

Degger [83]

Answer: 4 cm^2, it went from 4x4 to 2x2.. clipped on all sides...

Hope I helped!

Giving me brainliest is much appreciated! :).

7 0

3 years ago

A 4.3 ounce tomato has about 24 calories. How many calories are in one ounce ?

mafiozo [28]

Answer: approximately 5.5814 calories

==================================

We start off with this ratio

4.3 ounces : 24 calories

Divide both parts of the ratio by 4.3 so that we end up with 1 ounce on the left side

4.3 ounces : 24 calories

4.3/4.3 ounces : 24/4.3 calories

1 ounce : 5.5814 calories

This value is approximate to four decimal places.

7 0

3 years ago

John has five times as many nickels as quarters and three times as many dimes as quarters. The total value of the coins is $8. H

Elena L [17]

Answer:

4 quarters

20 Nickels

60 dimes

Step-by-step explanation:

4Q x 5 = 20N

20N x 3 = 60D

add them in to dollars you get one dollar each from the nickels and quarters and 6 dollars from the dimes.

7 0

3 years ago

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 function is graphed below y = 2x y = x + 3 y = 2x + 3 y = 2x + 2

Marizza181 [45]

Answer:

y = 2x + 3

Step-by-step explanation:

Going from point (0, 3) to point (1, 5), you go 2 units up and 1 unit right. That means the rise is 2, and the run is 1.

slope = rise/run = 2/1 = 2

The slope is 2.

y = 2x + b has a slope of 2.

Now we need b.

Looking at the graph, we see that the y-intercept of the line is point (0, 3), so b = 3.

The equation is

y = 2x + 3

4 0

3 years ago