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tankabanditka [31]
3 years ago
5

What percent of 30 is 27

Mathematics
2 answers:
shutvik [7]3 years ago
3 0

Answer:

90%

Step-by-step explanation:

convert the fraction know as a ratio to get 90%

DanielleElmas [232]3 years ago
3 0

Answer:

Step-by-step explanation:

27 = 30 x. Divide both sides by 30

27/30 = 30x/30

27/30 = x

.9 = x

.9 = 90/100 = 90%

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7. a hockey arena has 10 920 seats. the first row of seats around the rink has 220 seats. the number of seats in each subsequent
Mazyrski [523]

The number of rows in the arena is 26

<h3>How to determine the number of rows?</h3>

The hockey arena illustrates an arithmetic sequence, and it has the following parameters:

  • First term, a = 220
  • Sum of terms, Sn = 10920
  • Common difference, d = 16

The number of rows (i.e. the number of terms) is calculated using:

S_n = \frac{n}{2}(2a + (n -1) * d)

So,we have:

10920 = \frac{n}{2}(2 * 220 + (n -1) * 16)

Evaluate the terms and factors

21840 = n(440 + 16n -16)

Evaluate the like terms

21840 = n(424+ 16n)

Expand

21840 = 424n + 16n^2

Rewrite as:

16n^2 + 424n - 21840 = 0

Using a graphical tool, we have:

n = 26

Hence, the number of rows in the arena is 26

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4 0
2 years ago
Benny has saved three thousand nine hundred cents over four days from selling lemonade.How many dollars does Benny have?
saw5 [17]
30 Dollars.

Hope this helps please mark this as Brainliest answer,
6 0
3 years ago
What is the best estimate of the sum of the fraction? 31/4 +17/3 +8/18
Bogdan [553]

The best estimate of the sum of the expression given is \rm 13 \dfrac {31}{26}

What is a Fraction ?

A fraction is written as p/q , where q \rm \ne 0

It is asked to determine the sum of the fraction

31/4 + 17/3 + 8/18

Taking the LCM of 4 , 3 , 18

LCM of 4 , 3 ,18 is 36

Therefore

\rm \dfrac{ 31 *9 + 17 *12 + 8 *2}{36 }

(279+204+16) /36

499 / 36

\rm 13 \dfrac {31}{26}

Therefore the best estimate of the sum of the expression given is \rm 13 \dfrac {31}{26}.

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3 0
2 years ago
What is the cost of buying 5 kg of cheese worth<br> $9.00 per kg?
topjm [15]
$45

Hope this helps you
6 0
2 years ago
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(-13) (-4) işleminin sonucu kaçtır?<br>A -2.<br>B-1<br> 2<br><br>C 1<br> 2<br>D 2​
pentagon [3]

Answer:

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Step-by-step explanation:

That is the answer sister-in-law

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