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mylen [45]
3 years ago
6

6. Check whether - 150 is a term of the AP: 11, 8,5,2...

Mathematics
1 answer:
AURORKA [14]3 years ago
8 0
To check -150 is present in the sequence
-150=a+(n-1)d
According to the given series
a=11,d=-3
So we need to find n
If n is a fraction then it does not belongs to that series
From formula=-150=11+(n-1)-3
-150=11-3n+3
-150=14-3n
-150-14=-3n
-164=-3n
n=164/3
We got n as a fraction so -150 does not belong to series
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20% profit margin!

Step-by-step explanation:

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It mathematically means if the cost of the bucket was 100, and he sold at a profit equal to one - fifth of its cost price. It indicates that he earned a $20 profit. In other words, the person got a 20% profit percentage.

Note: I tried to take sample costs like $100 to make you understand as simple as I can.

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7 0
2 years ago
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guapka [62]
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5 0
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nikitadnepr [17]
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Step-by-step explanation:

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