2 years ago

I need help if anyone minds helping me

Mathematics

1 answer:

Colt1911 [192]2 years ago

3 0

I believe the answer is A, I hope that helps

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Determine the radius of convergence of the following power series. Then test the endpoints to determine the interval of converge

tresset_1 [31]

Answer:

Radius of the convergence is R = $\frac{1}{21}$

and,

The Interval of convergence is $-\frac{1}{21}$

Step-by-step explanation:

Given function : Σ(21x)^k

Now,

Using the ratio test, we have

R = $\lim_{n \to \infty} |\frac{21x^{k+1}}{21x^{k}}|$

R = $\lim_{n \to \infty} |\frac{21x^{k}\times21x^{1}}{21x^{k}}|$

R = $\lim_{n \to \infty} |21x^{1}|$

now,

for convergence R|x| < 1

Therefore,

$\lim_{n \to \infty} |21x^{1}|$ < 1

$-\frac{1}{21}$

and,

Radius of the convergence is R = $\frac{1}{21}$

and,

The Interval of convergence is $-\frac{1}{21}$

8 0

3 years ago

Helpppppppppppppppppppp

lora16 [44]

Answer: I think it's C

Step-by-step explanation:

(83-64)-(64+29)

83-64=19

64+29=93

3 0

3 years ago

Write 10 5/12 as an equivalent improper fraction.

velikii [3]

$10\frac{5}{12} =\frac{(10\times12)+5}{12}=\frac{120+5}{12} =\boxed{\bf{\frac{125}{12}}}$

Your final answer is A. 125/12

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X=8, y=20 find y when x=42

kherson [118]

You can make a proportion of 8/20 to 42/x and then simply cross multiply from there to solve for y

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Suppose Johnny invests $41,745 into an account, which has been earning interest for many years and he now has a total of $39,974

cupoosta [38]

A negative number wouldn't be reasonable in investments because when you invest you are adding money to something. If you invest you aren't removing anything so there can't be negative numbers.

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