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Evgesh-ka [11]
3 years ago
5

The ratio of boys to girls in a local choir is 7:10. If there are 35 boys in the choir, how many girls are there?

Mathematics
1 answer:
erica [24]3 years ago
3 0

Answer:

50 girls

Step-by-step explanation:

Given data

We have the ratio as

7:10

The total part = 7+10= 17

let the number of boys and girls be x

applying the part to all method

7/17= 35/x

cross multiply

7x= 35*17

7x=595

x=595/7

x= 85

Hence the number of girls is

=85-35

=50 girls

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Answer:

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Step-by-step explanation:

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Gekata [30.6K]

Answer:

a_n = -11 +3(n -1)

Explanation:

The nth term of an arithmetic sequence is explicitly defined as a_n = a_1 +d(n -1) where a_1 is the first term of the sequence and d is the the common difference.

From the given first five terms of the sequence we can see that the first term is 11 so a_1 = 11.

The common difference, d, can be calculated by a_n - a_{n -1} so we'll find the common difference of the given sequence by letting n = 2

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Now let's plug everything we know.

a_1 = -11

d = 3

a_n = -11 +3(n -1)

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