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Zarrin [17]
2 years ago
13

What is the value of x? A) 3 B) 6 C) 8 D) 1

Mathematics
2 answers:
makvit [3.9K]2 years ago
4 0
It is c because it is I just did if give me Brainly
faust18 [17]2 years ago
3 0

Answer:

I'm amusing its the answer is C

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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
Quadrilateral A'B'C'D' is a reflection of Quadrilateral ABCD over the y-axis What is the length of C'D'​
MArishka [77]

Answer:

C'D' = 4

Step-by-step explanation:

When the figure is reflected, the length of the segments does not change.

CD = 4 so C'D' = 4

4 0
2 years ago
Read 2 more answers
Which is a simplified form of the expression 3(m + 1) + 2m?
kompoz [17]

Answer:

D,  5m+3

PLEASE MARK BRAINLIEST

Step-by-step explanation:

Distribute:

=(3)(m)+(3)(1)+2m

=3m+3+2m

Combine Like Terms:

=3m+3+2m

=(3m+2m)+(3)

=5m+3

4 0
3 years ago
Read 2 more answers
I need help helping my brother asap
fiasKO [112]
It would be B because 64.35/7.15=9 so e=9
3 0
3 years ago
Solve the following base ten riddle: I have 30 ones, 82 thousands, 4 hundred thousands, 60 tens, and 100 hundreds. What number a
Anon25 [30]

Answer:

492,630

Logic is the only explanation I have for you...

6 0
2 years ago
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