2 years ago

Estimate how many times large (6.1) x 10⁷ is than (2.1) x 10⁻⁴ ?

Mathematics

2 answers:

bearhunter [10]2 years ago

4 0

Answer 300,000,000,000

egoroff_w [7]2 years ago

4 0

Answer:

300000000000

Step-by-step explanation:

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igor_vitrenko [27]

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Now, in order to find which shift's mean is closest to population mean, we will find the mean of each shift.

The mean of shift 1 is:

$Mean=\frac{18+25+56+42+29+38+54+47+35+30}{10}=\frac{374}{10}=37.4$

The mean of shift 2 is:

$Mean=\frac{23+19+50+49+67+34+30+59+40+33
}{10}=\frac{404}{10}=40.4$

The mean of shift 3 is:

$Mean=\frac{19+22+24+40+45+29+33+29+39+59 }{10}=\frac{339}{10}=33.9$

The mean of shift 4 is:

$Mean=\frac{21+23+25+40+35+19+70+40+22+23 }{10}=\frac{318}{10}=31.8$

We clearly see the mean of shift 2 is close to the population mean. Hence the option B) Shift 2 is correct.

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3 years ago

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sergejj [24]

Multiple 11/25 with 4 and 9/20 with 5 so it will be
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7 0

3 years ago

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Factor 2x^2-4x-30 completely. A. 2(x-5)(x+3) B. (2x-5)(x+3) C. (2x+3)(x-5) D. 2(x-3)(x+5)

OLEGan [10]

Answer:

Step-by-step explanation:

$2x^2-4x-30\\\\=2\cdot x^2-2\cdot2x-2\cdot15\\\\=2(x^2-2x-15)\\\\=2(x^2+3x-5x-15)\\\\=2[x(x+3)-5(x+3)]\\\\=2(x+3)(x-5)$

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S_A_V [24]

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Aleksandr-060686 [28]

Uh. Sounds like...

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3 years ago

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