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bezimeni [28]
3 years ago
9

Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule. A(n) = 1 + (n - 1) (-5.7)

Mathematics
2 answers:
OleMash [197]3 years ago
8 0
Well the first term = 1 because (n - 1) = 0 for the first term
So its either A or D 
4th term  = 1 + (4 - 1)(-5.7 = 1 + 3*-5.7 = -17.1

Its C 
KatRina [158]3 years ago
3 0

Answer:

D) 1, -16.1, -50.3

Step-by-step explanation:

For calculate the first term of the sequence we replace n by 1 in the equation, then:

A(n)=1+(n-1)(-5.7)

A(1)=1+(1-1)(-5.7)

A(1)=1

At the same way we can calculate the fourth term of the sequence replacing n by 4 in the equation, then:

A(n)=1+(n-1)(-5.7)

A(4)=1+(4-1)(-5.7)

A(4)=1 + 3*(-5.7)

A(4)=-16.1

Finally, the tenth term of the sequence can be calculate replacing n by 10, so:

A(n)=1+(n-1)(-5.7)

A(10)=1+(10-1)(-5.7)

A(10)= 1 + 9*(-5.7)

A(10)=-50.3

Then, the first, fourth and tenth term of the sequence is 1, -16-1 and -50.3 respectively.

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Answer:

Hence, the perimeter of the triangles are:

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Step-by-step explanation:

In two similar triangles:

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Let A and A' represents the area of two triangles and P and P' represents their perimeter.

Then they are related as:

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We are given:

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on taking square root on both the side we get:

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