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Ivan
3 years ago
5

1. Here are the first 5 terms of an arithmetic sequence.

Mathematics
1 answer:
Pavel [41]3 years ago
3 0

Answer:

see explanation

Step-by-step explanation:

The n th term of an arithmetic sequence is

a_{n} = a₁ + (n - 1)d

where a₁ is the first term and d the common difference

Here a₁ = 2 and d = 9 - 2 = 7, thus

(a)

a_{n} = 2 + 7(n - 1) = 2 + 7n - 7 = 7n - 5

(b)

Using the n th term formula, then

a_{15} = 7(15) - 5 = 105 - 5 = 100

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(area of square) - (area of triangle)

We know the are of a square is equal to s^2, where s is the side length.

While the are of a right angle tringle is 1/2*base*height

Then we have,

s = 10
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height = 4

(area of square) - (area of triangle)

=> (10^2) - (1/2)(4)(4)
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3 years ago
What is the total number of outcomes for choosing a numbered card from 1 to 10 and a number on a
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3 years ago
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Answer:

The sides are increased by a percentage of 25%

Step-by-step explanation:

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