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Gnom [1K]
4 years ago
10

Write down the nth term of the following sequence:

Mathematics
1 answer:
Sindrei [870]4 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

This is an arithmetic sequence with n th term

• a_{n} = a + (n - 1)d

where a is the first term and d the common difference

d = 2 - 7 = - 3 - 2 = - 5 and a = 7, hence

a_{n} = 7 - 5(n - 1) = 7 - 5n + 5 = 12 - 5n

a_{n} = 12 - 5n ← n th term formula

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The equivalent ratios of mammals to birds at the zoo are;

1) 32 to 28

3) 24 to 21

We are given the ratio of mammals to birds at the zoo as; 96 : 84

<h3>Equivalent Ratios</h3>

To get the possible equivalent ratios, we need to first of all list out all the factors of 96 and 84.

  • Factors of 96: 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96
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Now, from the factors listed above, if we divide both 96 and 84 by 3, we will arrive at a ratio of;

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Likewise,if we divide both by 4 we will get;

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In conclusion, the only equivalent ratios are 32:28 and 24:21.

Read more about ratios at; brainly.com/question/2784798

6 0
3 years ago
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sladkih [1.3K]

Answer:

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Step-by-step explanation:

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b=13-6

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8 0
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