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3 years ago

Please help on 5 to be marked the brainliest

Mathematics

2 answers:

ohaa [14]3 years ago

8 0

Answer:

3,200

Step-by-step explanation:

Blababa [14]3 years ago

6 0

Answer:

4000

Step-by-step explanation:

3200 x 250 = 800,000 x 0.1 = 80,000

4000 x 250 = 1,000,000 x 0.1 = 100,000

4200 x 250 = 1,050,000 x 0.1 = 105,000

5000 x 250 = 1,250,000 x 0.1 = 125,000

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jek_recluse [69]

Add the percentage as a decimal

To 1 to get 1.20

Multiply:

340 x 1.20 = 408

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3 years ago

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Katena32 [7]

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3 years ago

y=−2x+4 Complete the missing value in the solution to the equation. ( −2) Need it quick no explanation need.

Elodia [21]

Answer:

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3 years ago

In a study of academic procrastination, researchers reported that for a random sample of 41 undergraduate students preparing for

zhuklara [117]

Answer:

The 95% confidence interval is $10.5 < \mu$

Step-by-step explanation:

From the question we are told that

The sample size is $n = 41$

The sample mean is $\= x = 11.9 \ hr$

The standard deviation is $\sigma = 4.5$

For a 95% confidence interval the confidence level is 95%

Given that the confidence level is 95% then the level of significance can be mathematically represented as

$\alpha = 100 - 95$

$\alpha = 5 \%$

$\alpha = 0.05$

Next we obtain the critical values of $\frac{\alpha }{2}$ from the normal distribution table

The values is

$Z_{\frac{\alpha }{2} } = 1.96$

Generally the margin of error is mathematically represented as

$E = Z_{\frac{\alpha }{2} } * \frac{\sigma }{ \sqrt{n} }$

substituting values

$E = 1.96 * \frac{ 4.5 }{ \sqrt{41} }$

$E = 1.377$

The 95% confidence interval is mathematically represented as

$\= x - E < \mu < \= x - E$

substituting values

$11.9 - 1.377 < \mu$

$10.5 < \mu$

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3 years ago

What is a perpendicular lines

rewona [7]

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4 years ago