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Wittaler [7]
3 years ago
15

Find the 8th term of the geometric sequence, given the first term and common ratio. a1=6 r=-1/3

Mathematics
1 answer:
Damm [24]3 years ago
8 0

The rule of a geometric sequence:

a_n=a_1r^{n-1}

We have:

a_1=6;\ r=-\dfrac{1}{3}

Find a_8=?\to n=8

substitute:

a_8=6\cdot\left(-\dfrac{1}{3}\right)^{8-1}=6\cdot\left(-\dfrac{1}{3}\right)^7=6\cdot\left(-\dfrac{1}{2187}\right)=-\dfrac{2}{729}

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mestny [16]

9514 1404 393

Answer:

  5/8

Step-by-step explanation:

The area of the smaller circles is proportional to the square of the ratio of their diameters. The two smallest circles have diameters equal to 1/4 the diameter of the largest circle. Hence their areas are (1/4)^2 = 1/16 of that of the largest circle.

Similarly, the medium circle has a diameter half that of the largest circle, so its area is (1/2)^2 = 1/4 of the are of the largest circle.

The smaller circles subtract 2×1/16 +1/4 = 3/8 of the area of the largest circle. Then the shading is 1-3/8 = 5/8 of the area of the largest circle.

3 0
3 years ago
2 is more than a number v
Snowcat [4.5K]
2 is more than a number v

 2 > v is your equality

this means that <em>v</em> can be the number 1 or less

hope this helps
8 0
3 years ago
It cost 17 and $.70 send 170 in text messages how many text messages did you send if you spent $19.10?
ZanzabumX [31]

Answer:

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Step-by-step explanation:

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6 0
3 years ago
1.4 has 2 significant digits as a result of which rule? a. All nonzero numbers are significant. b. Zeros between nonzero digits
marishachu [46]

Answer:

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(a) is correct option.

Step-by-step explanation:

Given that,

1.4 has 2 significant digits.

We know that,

Significant digits :

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All zero which is present in between two significant digits it is also significant.

Leading zero is not count as significant.

Trailing zero is count as significant.

We need to find 1.4 has 2 significant digits as a result of which rule

Using given rules

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Hence, All non zero digits count in significant digits.

(a) is correct option.

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3 years ago
Give one verbal expression (VE) and its equivalent algebraic expression (AE).
emmasim [6.3K]

Answer:

A few examples:

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AE: x + 4y

Let me know if this helps!

7 0
3 years ago
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