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vagabundo [1.1K]
3 years ago
10

Answer plz Nina has a collection of 20 seashells she wants to display in rows List all of the ways that nina can display her she

lls in equal rows.
Mathematics
1 answer:
Galina-37 [17]3 years ago
5 0

Nina has 20 seashells, and she needs to display them in rows with equal number of seashells in each row.

She wants to know what are the different possible ways to do that

This is a problem of factorization. We need to determine all the factors for the number of seashells she has

Factorizing 20:

20 = 1 × 2 × 2 × 5

Now, dividing 20 by each factor, we will get to know the possible ways in which she can arrange the seashells

Starting with the smallest factor, i.e. 1 and moving on to larger factors

20 ÷ 1 = 20. So she can have 1 row, with 20 seashells

20 ÷ 2 = 10. She can have 2 rows, with 10 seashells in each row

20 ÷ 4 = 5. She can have 4 rows, with 5 seashells in each row

20 ÷ 5 = 4. She can have 5 rows, with 4 seashells in each row

20 ÷ 10 = 2. She can have 10 rows, with 2 seashells in each row

20 ÷ 20 = 1. She can have 20 rows, with 1 seashell in each row

So there are total of 6 ways to arrange the seashells.

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Find the slope of the line below . Enter your answer as a fraction or decimal. Use a slash mark ( / ) as the fraction bar if nec
natali 33 [55]

Answer:

1/5

Step-by-step explanation:

We can find the slope of a line given two points by using the following

m = ( y2-y1)/(x2-x1)

    = ( 3-0)/(7 - -8)

    = ( 3-0)/(7+8)

     = 3/15

    = 1/5

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3 years ago
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3 years ago
Help asap please!
mario62 [17]
I have to rewrite the expressions because they look very confusing.

1) The given fractions to add are:

  4p² + 6        2p - 2
------------ +  ------------
     4p²             10p²

2) The statements to asses are:

<span>A) The least common denominator is 20p
.
B) The first fraction rewritten with the LCD is (20p² +30) / 20p²

C) The second fraction rewritten with the LCD is (4p - 4) / 20p

D) The sum is (24p² -4p +30 ) / 20p² = (12p-2p+15) / 10p^2

E) The sum is a rational expression.

This is the result for each statement.

</span>
<span>A) The least common denominator is 20p

FALSE: THE LCD IS 20p², because it the least expression that contains all the prime factors of both denominators: 4p² and 10p.

See that you cannot divide 20p by 4p² but you can divide 20p² by 4p² and 10 p. So, 20p is not a common denominator.
.
B) The first fraction rewritten with the LCD is (20p² +30) / 20p²

TRUE: you get this expression from the first fraction by multiplying both numerator and denominator by  20p² / 4p² = 5:

(4p² + 6)×5 = 20p² + 30

(4p²)×5 = 20p²

=>

  20p² + 30
--------------
      20p²

C) The second fraction rewritten with the LCD is (4p - 4) / 20p

FALSE: you have to multiply both numerator an denominator by 20p² / 10p = 2p

(2p - 2) × 2p = 4p² - 4p

10p × 2p = 20p²

So, the second fraction rewritten with the LCD is:

 4p² - 4p
-----------
    20p²

D) The sum is (24p² - 4p +30 ) / 20p² = (12p-2p+15) / 10p²

TRUE

</span>
<span><span>  20p² + 30        4p² - 4p         24p² - 4p + 30
-------------- +   --------------- = ----------------------
      20p²              20p²                    20p²</span>


And when you simplify the last fraction dividing by 2 you get:

  12p² - 2p + 15
-----------------------
          10p²

E) The sum is a rational expression.

TRUE:

The sum of rational number has the closure property which means that by adding rational expression you will always ge a rational expression.
</span>
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3 years ago
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How do you measure angles like these?<br> pls help I have a test and I don't understand
earnstyle [38]

Answer:

120°

Step-by-step explanation:

To find angle BCD, we need to spot that the angle is on a straight line (ACD); angles on a straight line add up to 180°. This means we can find the missing angle by doing 180 - 60 which is 120°.

Hope this helps!

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Pls help me or I'ma fail​
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The volume of the cylinder with an hexagonal base is 1793.4 cm³

<h3 /><h3>How to find the volume of a cylinder?</h3>

The volume of a cylinder with a hexagonal base can be found as follows;

volume of the hexagonal cylinder = Bh

where

  • B = base area
  • h = height

Therefore,

area of the hexagonal base  = 1 / 2 pa

where

  • p  = perimeter
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Therefore,

Volume = (0.5 × 6.1 × 7 × 6) × 14

Therefore,

volume = 128.1 × 14

volume = 1793.4 cm³

learn more on hexagonal cylinder here: brainly.com/question/12477905

#SPJ1

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