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Andrej [43]
3 years ago
9

4) Which set contains NO Irrational Nurabers?

Mathematics
1 answer:
xz_007 [3.2K]3 years ago
7 0

Answer:

d

Step-by-step explanation:

d does not have any repeaing decimals, or any other type of irrational number

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Describe and correct the error in finding the tenth term of the arithmetic sequence 4, 12, 20, 28.
ycow [4]

Answer: The tenth term is 76

=======================================================

Explanation:

We use this arithmetic sequence formula to get the nth term

a_n = a_1 + d(n-1)

Plug in a_1 = 4, \ d = 8, \ n = 10 and you should get the following:

a_n = a_1 + d(n-1)\\\\a_{10} = 4 + 8(10-1)\\\\a_{10} = 4 + 8(9)\\\\a_{10} = \textbf{76}\\\\

The tenth term is <u>76</u>

---------

We can verify this by listing out the terms one by one. Start at 4, add on 8 each time, until you generate the 10th term. A table like the one shown below is a good way to keep track of all the terms.

\begin{array}{c|c}\boldsymbol{n} & \boldsymbol{a_n}\\1 & 4\\2 & 12\\3 & 20\\4 & 28\\5 & 36\\6 & 44\\7 & 52\\8 & 60\\9 & 68\\10 & \textbf{76}\\\end{array}

---------

In short, the error is with the "10" in the expression 4+10(8). The student should have used 9 instead. This is because of the n-1 term in a_n = a_1 + d(n-1) which shifts everything one spot to the left.

7 0
2 years ago
How to divide a rectangle into 14 equal parts
Andrew [12]

Answer:

A picture

Step-by-step explanation:

5 0
3 years ago
You have 1000000 small cubes.
Tju [1.3M]

Answer:

1000 in

Step-by-step explanation:

Given

The dimension of the small cube is 1\ in.1 in.

No of the cubes is 10^6106

If the small cubes are arranged on the floor

The area of the cubes is

\Rightarrow 10^6\times 1^2\ in.^2⇒106×12 in.2

8 0
3 years ago
Find the value of n that makes equation true.<br> 5n =20<br> n + 5 = 10<br> 2n = 3<br> n + 5 = 13
Kamila [148]

Answer:

n+5=10

Step-by-step explanation:

8 0
3 years ago
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Which equation has the same solutions as (x-5)^2=-9
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The answer is pi but to fifteen places
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3 years ago
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