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prisoha [69]
3 years ago
7

I also know this one i just wanna see if u know XD

Mathematics
1 answer:
amm18123 years ago
6 0
Not a chance I can solve this lol
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Dan has £100. Colin takes £. How much is left
sasho [114]

Answer:

Maybe 99£

Step-by-step explanation:

Please give me brainliest

8 0
2 years ago
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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
I need help with this!
lisabon 2012 [21]

Answer:

angle j = 90

angle k = 29

angle L = 61

Step-by-step explanation:

180 = 90 + (4x-19) + (5x+1)

90 = 9x - 18

108 = 9x

x = 12

3 0
2 years ago
Find the area of the regular 2424​-gon with radius 1010 mm.
Mkey [24]

Answer:

i got 32031.14

Step-by-step explanation:

the radious to the second power times pie

6 0
2 years ago
Find three prime numbers that add up to another prime number.
Illusion [34]
5+7+11=23
3+11+53=67
3+11+61=71
 are some examples
3 0
3 years ago
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