3 years ago

I'm in need for some assistance. Please help

Mathematics

1 answer:

NemiM [27]3 years ago

5 0

The answer is the second one.

See attachment file below.

Hope it helped!!

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So, c = π * 8
c = 8π

In short, Your Answer would be Option C

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3 years ago

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2 years ago

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pH measurements of a chemical solutions have mean 6.8 with standard deviation 0.02. Assuming all pH measurements of this solutio

aalyn [17]

Answer: 2.14 %

Step-by-step explanation:

Given : pH measurements of a chemical solutions have

Mean : $\mu=6.8$

Standard deviation : $\sigma=0.02$

Let X be the pH reading of a randomly selected customer chemical solution.

We assume pH measurements of this solution have a nearly symmetric/bell-curve distribution (i.e. normal distribution).

The z-score for the normal distribution is given by :-

$z=\dfrac{x-\mu}{\sigma}$

For x = 6.74

$z=\dfrac{6.74-6.8}{0.02}=-3$

For x = 6.76

$z=\dfrac{6.76-6.8}{0.02}=-2$

The p-value = $P(6.74$

$P(z$

In percent, $0.0214\times=2.14\%$

Hence, the percent of pH measurements reading below 6.74 OR above 6.76 = 2.14%

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3 years ago

Use the slope or distance formula to determine the most precise name for the figure A(-3,-7) B(2,-3) C(9,4) D(4,0)

Kamila [148]

If u just give me my fricking points its 91

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2 years ago

In an alloy of gold and silver the ratio of the metals is 6:4. How much gold is there in 200 grams of this alloy?

nexus9112 [7]

Answer:

120 gold is in the alloy

Step-by-step explanation:

G:S

6:4

6+4=10

200/10=20

20*6=120

Hope this helps!

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2 years ago