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miss Akunina [59]
3 years ago
14

I need help!!!!!

Mathematics
2 answers:
Elanso [62]3 years ago
7 0
7.5 litres
you can find this by dividing the number by 10, for example let’s use the number 20.
you would divide 20 by 10 which is 2 and times it by 7.
This is 14.
By finding this you have found 70% of 20.
now to find 5%, i would divide 20 by 10 once again which is 2 and then i would divide it by 2 which is 1.
then you would add the 2 numbers so 14+1 to get 15 therefore 75%of 20=15
Elanso [62]3 years ago
5 0

Answer:

1. 75% of 10 liters of milk = 0.75 * 10 liters of milk = 7.5 liters of milk

2. To find 75% of a number, multiply the number by 0.75.

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C. Reactants combine to form Products. Hope this helped! ;)

Step-by-step explanation:

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Simplify the following <br><br> Square root 15 / Square root 3
Elina [12.6K]

Answer:

The answer is √5 .

Step-by-step explanation:

You have to rationalize the fraction in order to get rid of surd in the denorminator by multiplying √3 to both numerator amd denorminator :

\frac{ \sqrt{15} }{ \sqrt{3} }

=  \frac{ \sqrt{15} }{ \sqrt{3} }  \times  \frac{ \sqrt{3} }{ \sqrt{3} }

=  \frac{ \sqrt{15} \times  \sqrt{3}  }{ \sqrt{3}  \times  \sqrt{3} }

=  \frac{ \sqrt{45} }{3}

=  \frac{ \sqrt{9 \times 5} }{3}

=  \frac{3 \sqrt{5} }{3}

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3 years ago
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Find the sum of 14 + 8 + 2+ ... + ( 274) + (-280).
Musya8 [376]

The sum of the given sequence is -6384.

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

The given Arithmetic sequence is 14 + 8 + 2+ ... + ( 274) + (-280).

  • The first term of the sequence = 14
  • The last term of the sequence = -280
  • The common difference ⇒ 14 - 8 = 6

<u>To find the number of terms in the sequence :</u>

The formula used is n = (\frac{a_{n}-a_{1}} {d})+1

where,

  • n is the number of terms.
  • a_{n} is the late term which is -280.
  • a_{1} is the first term which is 14.
  • d is the common difference which is 6.

Therefore, n =(\frac{-280-14}{6}) +1

⇒ n =( \frac{-294}{6}) + 1

⇒ n = -49 + 1

⇒ n = -48

⇒ n = 48, since n cannot be negative.

∴ The number of terms, n = 48.

<u>To find the sum of the arithmetic progression :</u>

The formula used is S = \frac{n}{2}(a_{1} + a_{n} )

where,

  • S is the sum of the sequence.
  • a_{1} is the first term which is 14.
  • a_{n} is the late term which is -280.

Therefore, S = \frac{48}{2}(14+ (-280))

⇒ S = \frac{48}{2}(-266)

⇒ S = 48 \times -133

⇒ S = -6384

∴ The sum of the given sequence is -6384.

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3 years ago
Jeannie takes inventory of her closet and discovers that she has 8 shirts for every 5 pair of jeans if she has 40 shirts how man
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Answer:

BC = 2

Step-by-step explanation:

If B lies on AC it makes the line segments AB and BC.

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AB+BC=AC

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