2 years ago

PLEASE HELP IM FAILING

Mathematics

1 answer:

ioda2 years ago

6 0

Answer:

I think its B but i could be wrong

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What is the sum of the first 50 terms of the series 2 + 17 + 32 + 47+ ...?

Alex

Answer:

$\huge\boxed{18,475}$

Step-by-step explanation:

The terms of this sum make the arithmetic sequence.

The fomula of a sum of <em>n</em> terms of an arithmetic sequence:

$S_n=\dfrac{[2a_1+(n-1)d]\cdot n}{2}$

We have

$a_1=2\\d=17-2=32-12=47-32=15\\n=50$

Substitute:

$S_{50}=\dfrac{[2\cdot2+(50-1)\cdot15]\cdot50}{2}=(4+49\cdot15)\cdot25=(4+735)\cdot25\\\\=739\cdot25=18,475$

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3 years ago

Kara works at a fine jewelry store and earns commission on her total sales for the week. Her weekly paycheck was in the week tot

GrogVix [38]

Answer:

12.2%

Step-by-step explanation:

Her total paycheck minus her salary = the commission amount

6500 - 1000 = 5500

So....her commission as a percentage of sales = 5500/ 45000 = about 12.2%

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3 years ago

Which expression is NOT equal to 28?

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Answer:

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Step-by-step explanation:

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The Hebrews were the only civilization who believed one God.

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I need help ASAP (will give brainliest)

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IT IS C BECAUSE IT IS SAYING IT WAS 43 AND IS NOW DROPPING BY -3

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