3 years ago

PLS HELP WILL AWARD BRAINLIST!!!! PLS HELP DUE Tomorrow

Mathematics

1 answer:

Serhud [2]3 years ago

3 0

Answer:

72º

Step-by-step explanation:

Angles at a point = 360º

Number of wedges = 5

Angle of each wedge

= 360 ÷ 5

= 72º

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What is the slope and y-intercept of the linear equation y = 5x − 4? <br> M= ? <br> B= ?

Feliz [49]

Answer:

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Step-by-step explanation:

y = mx + b

7 0

3 years ago

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Suppose heights of seasonal pine saplings are normally distributed and have a known population standard deviation of 17 millimet

Mumz [18]

Answer:

$296.693\leq x\leq 319.307$

Step-by-step explanation:

The confidence interval for the population mean x can be calculated as:

$x'-z_{\alpha /2}\frac{s}{\sqrt{n} } \leq x\leq x'+z_{\alpha /2}\frac{s}{\sqrt{n} }$

Where x' is the sample mean, s is the population standard deviation, n is the sample size and $z_{\alpha /2}$ is the z-score that let a proportion of $\alpha /2$ on the right tail.

$\alpha$ is calculated as: 100%-99%=1%

So, $z_{\alpha/2}=z_{0.005}=2.576$

Finally, replacing the values of x' by 308, s by 17, n by 15 and $z_{\alpha /2}$ by 2.576, we get that the confidence interval is:

$308-2.576\frac{17}{\sqrt{15} } \leq x\leq 308+2.576\frac{17}{\sqrt{15} }\\308-11.307 \leq x\leq 308+11.307\\296.693\leq x\leq 319.307$

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3 years ago

Three to the fourth power.<br> Write the numerical answer only.

irakobra [83]

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3 years ago

Jenny purchased a prepaid phone card for $30.Long distance calls cost 12 cents a minute using this card. Jenny used her card onl

Korolek [52]

Answer:

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Step-by-step explanation:

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3 years ago