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Goshia [24]
3 years ago
8

How many ways can 5 books be arranged on a shelf

Mathematics
1 answer:
Zielflug [23.3K]3 years ago
3 0
There are very many ways to this!
We can have horizontal, vertical, some can be laying down wile others are standing up, some could be standing up and the others layed down on top of them etc.
but in this case it would be 120 ways. 
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Emily and her children went into a grocery store and she bought $20.80 worth of bananas and peaches. Each banana costs $0.80 and
MakcuM [25]

Answer:

The number of bananas that Emily bought was 6 and the number of peaches that Emily bought was 8

Step-by-step explanation:

<u><em>The complete question is</em></u>

Emily and her children went into a grocery store and she bought $20.80 worth of bananas and peaches. Each banana costs $0.80 and each peach costs $2. She bought  a total of 14 peaches and bananas altogether. Determine the number of peaches and the  number of bananas that Emily bought

Let

x ----> the number of bananas that Emily bought

y ----> the number of peaches that Emily bought

we know that

She bought  a total of 14 bananas and peaches altogether

so

x+y=14 -----> equation A

She bought $20.80 worth of bananas and peaches

so

0.80x+2y=20.80 -----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

The solution is the point (6,8)

see the attached figure

therefore

The number of bananas that Emily bought was 6 and the number of peaches that Emily bought was 8

3 0
4 years ago
A train travels from New York City to Washington D.C. and then back again. The table below shows the number of Coach tickets sol
alisha [4.7K]

Answer:  $74

<u>Step-by-step explanation:</u>

Let C represent the cost of a coach ticket

Let B represent the cost of a business ticket

Washington: 150C +  50B = 18,450

NY City:         170C + 100B = 27,280

Solve the system using the Elimination method:

-2(150C +  50B = 18,450)   →   -300C - 100B = -36,900

1(170C + 100B = 27,280)   →     <u>170C + 100B =  27,280  </u>

                                                 -130C             =  - 9,620

                                             <u>  ÷ -130              </u>  <u> ÷   -130    </u>

                                                          C            =      74

8 0
3 years ago
5/3 is less than or greater than 5/2
Law Incorporation [45]
These are improper fractions so you need to change them to mixed numbers. 5/2 is 2 1/2 and 5/3 is 1 2/3. From there you can tell which is smaller and which is larger.
7 0
3 years ago
Read 2 more answers
What value of x makes this equation true?<br> 5-2(x + 8) = 6x + 7
zhuklara [117]

Answer:

x = negative 9/4

Step-by-step explanation:

-2x-11=6x+7

-2x-11+11=6x+7+11

-2x=6x+18

-2x-6x=6x+18-6x

-8x=18

4 0
3 years ago
Solve the following linear system of equations using substitution.
suter [353]

Answer:

(-1,-8)

Step-by-step explanation:

Did the assignment

4 0
3 years ago
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