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sleet_krkn [62]
3 years ago
6

There are 220 students in year 9.

Mathematics
1 answer:
olganol [36]3 years ago
8 0
20% of 220 is 44 people so if you divide 220 by 2 you have 110 of each then add 44 to one and subtract 44 from the other the answer to a is 154 and the answer to b is 66
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Write the ratio two fifths<br> to 8 as a fraction in simplest form.<br><br> PLEASE HELP
charle [14.2K]

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Step-by-step explanation:

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Step-by-step explanation:

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2 years ago
A) If the 5th term of an A.P. is double the 7th term, show that the sum of the 17 terms zero.​
gayaneshka [121]

Answer:

see explanation

Step-by-step explanation:

The nth term of an AP is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

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The sum of n terms of an AP is

S_{n} = \frac{n}{2} [ 2a₁ + (n - 1)d ] , substitute values

S_{17} = \frac{17}{2} ( 2(- 8d) + 16d)

     = 8.5(- 16d + 16d)

     = 8.5 × 0

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5 0
2 years ago
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Allisa [31]
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4 0
3 years ago
Write as a fraction <br>3÷151​
stepan [7]

Answer:

3/151

Step-by-step explanation:

That's the answer

3 0
2 years ago
Read 2 more answers
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