Given (x – 7)2 = 36, select the values of x.

Mathematics

1 answer:

sdas [7]1 year ago

4 0

1 and 13. I think you meant to make 2 as an exponent, otherwise it would not be any of the following if it isn’t.

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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:

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

6 0

3 years ago

Can someone help me?

12345 [234]

$A= ab \frac{sin \theta}{2}$
where A is area
a is side a lets say its 8cm
b is side b lets say its 7 cm
theta is 28

4 0

3 years ago

You drive 8 miles from your house to your friend's house. Your house is at an elevation of 240 feet. Your friend's house is at a

dedylja [7]

(680 - 240) / 8 = 440/8 = 55 ft per mile

7 0

3 years ago

Can somebody help pls it's due in 1 hour

marta [7]

All are correct because negative numbers are always smaller than 0 and bigger negative numbers always are less then smaller negative numbers such as -9 is smaller than -5

4 0

2 years ago

What is the area of a triangle whose base is 14 m and whose height is 22 m?

Ivanshal [37]

Base times height divided by 2 is the area. So 14 times 22 is 308 and divided by 2 is 154 so that is your answer. I hope this helps. Could I possibly get brainliest?

4 0

2 years ago