2 years ago

What is the final step to prove that Sn>-1/2-1/4-1/8...-1/2n=1/2n

Mathematics

1 answer:

ahrayia [7]2 years ago

7 0

Answer:

By a theorem we learned, i. and ii. are valid under the assump- tion that the sequences (a n)1 n=1and (b n) 1 n=1are convergent. For iii.]

Step-by-step explanation:

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Solve 5x^2+2x=1 using either factoring, square root method, completing the square or quadratic formula.

wolverine [178]

Answer:

x = -1 ± √6 / 5

Step-by-step explanation:

Solve $5x^{2}$ + 2x = 1

move 1 to the left side of the equation by subtracting it from both sides.

$5x^{2}$ + 2x - 1 = 0

Use the quadratic formula to find the solutions.

-b± $\sqrt{b^2 - 4 (ac)}$ / 2a

Substitute the values a = 5 , b = 2, and c = -1 into the quadratic formula and solve for x

-2± $\sqrt{2^2 - 4(5 - 1)}$ / 2 ⋅ 5

Simplify.

x = -2 ± 2 $\sqrt{6}$ / 10

x = -1 ± $\sqrt{6}$ / 5

Exact Form:

x = -1 ± $\sqrt{6}$ / 5

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2 years ago

What is the missing angle measurement in the polygon shown below?

Zinaida [17]

Answer:

155 degrees

Step-by-step explanation:

Every 4 angled shape will equal 360

45+130+30+x=360

205+x=360

155=360

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2 years ago

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If f(x) = x/2 + 8, what is f(x) when x = 10? <br> 4<br> 9<br> 13<br> 36

Murrr4er [49]

Solution:

f(10) = 10/2 + 8

f(10) = 5 + 8

f(10) = 13

Best of Luck!

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What is the area of this polygon?

Kobotan [32]

The answer is C; 35.5 units^2

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2 years ago

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TIMED!!! NEED HELP ASAP!!!! I'm lazy......

Colt1911 [192]

On the X side it’s +1
Hopefully this helps

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2 years ago