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Bezzdna [24]
3 years ago
11

What is the sum of? A. S=1.5 B.S=2 C.S=4.5 D.=8

Mathematics
2 answers:
sweet [91]3 years ago
5 0
8.  You can graph this or use the summation function on the TI computer. 
Arada [10]3 years ago
3 0
∞
∑4(0.5)ⁿ⁻¹
n=1
For n = 1 → 4(0.5)¹⁻¹ = 4(0.5)⁰ = 4(1) = 4
For n = 2 → 4(0.5)²⁻¹ = 4(0.5)¹ = 4(0.5) = 4(0.5)
For n = 3 → 4(0.5)³⁻¹ = 4(0.5)² 
For n = 4 → 4(0.5)⁴⁻¹ = 4(0.5)³ 
We notice this is a geometric series with first term:
a=4 & r= 0.5
Since r<1, then the formula of the sum when n→∞ is:

Sum= a(1/1-r)
Sum = 4/(1-0.5)
Sum = 4/(1/2) = 4 x 2

 ∞
∑4(0.5)ⁿ⁻¹ = 8 (answer D)
n=1

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If you can solve it.Thanks in advance
vivado [14]

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Step-by-step explanation:

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f(g(x))=(\frac{1}{x^{2}+1})^{2} +\frac{1}{\sqrt[3]{(\frac{1}{x^{2}+1})}}

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4 0
3 years ago
The drop of water suggests the term
Shalnov [3]

Answer:

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Step-by-step explanation:

5 0
2 years ago
Multiply. Express each answer as a decimal.<br><br> 12⋅15<br> 34⋅200<br> (0.2)⋅60<br> (0.75)⋅20
katovenus [111]

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3 0
3 years ago
Find the value of x. I WILL GIVE YOU BRAINLIEST!!!!​
Elan Coil [88]

Hi there!

\large\boxed{x = 40}

We can solve for x knowing that the sum of interior angles in a triangle is 180°.

The square at the bottom indicates a right angle, or 90°. Therefore:

180 = 90 + x + (x + 10)

Combine like terms:

180 = 100 + 2x

Subtract 100 from both sides:

180 - 100 = 2x

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Divide both sides by 2:

x = 40.

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