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KiRa [710]
3 years ago
10

PLEASEE CHOOSE ONE ANSWER :) A, B, C or D

Mathematics
1 answer:
Leviafan [203]3 years ago
3 0

Answer:

A

Step-by-step explanation:

Since one line is dotted and one line is full, and they're both greater than

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Let f(x) = [infinity] xn n2 n = 1 . Find the intervals of convergence for f. (Enter your answers using interval notation.) Incor
sveta [45]

Answer:

The interval of convergence is -1<x<1

Step-by-step explanation:

To find the interval of convergence of the series, we will use the condition for convergence of a series according to Ratio test.

The solution is as shown in the attachment.

7 0
3 years ago
What is estimate 4.23-2.51
ruslelena [56]
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4 0
3 years ago
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According to the US Census Department, someone born in 1950 has a life expectancy
babymother [125]

Answer:

a) 69.5 b)72.1 c)74.7

Step-by-step explanation:

a)Someone born in 1950 has life expectancy=68.2 yrs while 1970=70.8 yrs

to find life expectancy of someone born in 1960 we can interpolate to find the results like this:

(68.2+70.8)/2 =69.5 because 1960 is exactly in between 1950 and 1970

Now we can see the trend like this :

68.2,69.5,70.8 and common difference is 1.3

b) adding 1.3 to 70.8 we can get life expectancy for someone born i  1980 and that is 72.1

c) adding two times 1.3 life expectancy of someone born in 2000 is 74.7 as year gap is 2

Generally it is said that interpolation is more accurate and extrapolation can have errors but in our present case i'm more confident about b and c as the series is simple but it too depends on a to find the accurate common  difference so if there is some errror in a we too have error chances in b and c so they are interrelated.

8 0
4 years ago
Solve for x………………………
k0ka [10]

4×11+1=45

A+B+C=180 60+75+C=180 180_130=c c=45

4 0
3 years ago
Solve the equation and check the solution.
myrzilka [38]

A - 2 1/2 = 1 1/2

Solve for A by adding 2 1/2 to both sides:

A = 1 1/2 + 2 1/2

A = 4

The answer is c. A = 4

Check: 4 - 2 1/2 = 1 1/2

8 0
3 years ago
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