4 years ago

Nuu.

Mathematics

1 answer:

Zolol [24]4 years ago

3 0

Answer:27/5

Step-by-step explanation:It just is that

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Gnoma [55]

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2 years ago

A factory robot found flaws in 2 out of 12 bulbs. Considering this data, how many flawed bulbs would the robot be expected to fi

klio [65]

So if it’s 2/12 it would be 1 flaw in every 6 light bulbs. so if there were 18 light bulbs there would be 3 flaws (6 * 3 is 18)

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3 years ago

Water fills a tank at a rate of 150 litres during the first hour, 350 litres during the second, 550 litres during the third and

Alborosie

Putting this as an arithmetic sequence gives:

$u_n = 150+200(n-1)$

The sum of the series = 16 x 7 x 7 = 784 m^3 = 784 000 L

The sum of an arithmetic series can be written as:

$S_n=n/2 [2a+(n-1)d] = 784 000
\\n/2[2(150)+(n-1)200] = 784 000
\\n[300+200(n-1)=1 568 000
\\300n+200n^2-200n = 1 568 000
\\200n^2+100n- 1 568 000 = 0
\\2n^2 +n- 15680 = 0

\\n= 88.2...,-88.7$

n has to be positive, so we get

n = <u>88.2 hours (3 s.f.)</u>

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4 years ago

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Sean makes 1,000 every paycheck and has to pay 100$ in tax every time he gets a paycheck , what percent of Sean’s income is spen

Alja [10]

Answer:10%

Step-by-step explanation:

If Sean is getting $100 per paycheck, and they take $100 every time, $100 is 10% of $1000

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3 years ago

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You roll a standard number cube once. Find p (number lass than 7).