2 years ago

If 8x + 6 = 3x + 21,

Mathematics

1 answer:

spin [16.1K]2 years ago

4 0

Answer:

x = 3

Step-by-step explanation:

First, subtract 3x from both sides. That leaves 5x+6=21.

Next, subtract 6 from both sides. That leaves 5x=15.

Lastly, divide by 5 and you get x=3

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Solve the system of equations using the tables below

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Answer:

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Step-by-step explanation:

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3 years ago

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2 years ago

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So,

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Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n equals

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Answer:

(0.767,0.833)

Step-by-step explanation:

The 95% confidence interval for population proportion p can be computed as

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The z-value associated with 95% confidence level is 1.96.

whereas p=x/n

We are given that x=440 and n=550.

p=440/550=0.8

$0.8-1.96\sqrt{\frac{0.8(0.2)}{550} }$

$0.8-1.96\sqrt{\frac{0.16}{550} }$

$0.8-1.96\sqrt{0.00029 }$

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$0.76657$

Thus, the required confidence interval is

0.767<P<0.833 (rounded to 3 decimal places)

Hence, we are 95% confident that our true population proportion will lie in the interval (0.767,0.833)

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2 years ago

Hi guys! I'll give brainlest!

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Answer:

3/20

Step-by-step explanation:

Basically you find the how to write 0.15 in simplest form:)

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