3 years ago

I don't get these what Do I do

Mathematics

1 answer:

max2010maxim [7]3 years ago

3 0

Answer:

No idea

Step-by-step explanation:

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Flauer [41]

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The car is slowing down.

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3 years ago

What is a8 for the geometric sequence 6,561;−2,187;729;−243;…6,561;−2,187;729;−243;….

VMariaS [17]

Consider a geometric sequence $(u_n)$

let $u_1=a$ and the common ratio be r, then the sequence is constructed as follows:

$u_1, u_2, u_3..... = a, ar, a r^{2}, a r^{3}, ...$

we can observe that each term of the sequence is its previous term * r.

In the given sequence, to find the common ratio we divide 6,561 by −2,187 and get -3. This means that $r= -\frac{1}{3}$

Let the first term $u_1=a=6,561$ ,

then the eighth term is

$u_8=a* r^{7}= 6,561 (- \frac{1}{3} )^{7}= -6,561*( \frac{1}{3} )^{7}= \frac{-6,561}{2187} =-3$

Answer: -3

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4 years ago

Which of the following would be true given that x is 25°? A. sin (25) = cos (25) b. sin (25) = cos (65) c. sin (25) = cos (155)

Marat540 [252]

b. sin (25) = cos (65)

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