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3 years ago

15

If we assume that the annual rate of inflation were to remain steady at 3.4%, and particular item costs $45 now, what would this

suggest we would be paying for the same item in a year?

1 answer:

Illusion [34]3 years ago

7 0

Answer:

$46.53 and $49.75

Step-by-step explanation:

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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

Each day you read 15 pages in your textbook. Use the drop-down menu to choose the correct equation that represents the total num

zysi [14]

Answer: C. y=15x

Step-by-step explanation:

i did the quiz !

GIVE ME A THANK YOU :)

5 0

3 years ago

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The square below has a side length of 5 cm. What is the length of the missing side? Round your answer to the nearest whole numbe

Misha Larkins [42]

Answer:

D. about 7 cm

Step-by-step explanation:

You can use the pythagorean theorem.

You have a triangle with sides of 5 and 5, so that means the third side is:

$a^2 + b^2 = c^2 --> 5^2 + 5^2 = c^2\\25 + 25 = c^2\\50 = c^2\\c = 5\sqrt{2}$

rounding:

$5\sqrt{2} = 7$

5 0

3 years ago

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One endpoint (-1,-5) Midpoint (2,3)

Alecsey [184]

I don’t know the answer but I need a answer to this

4 0

3 years ago

What is 5 wholes - 2 fifths

padilas [110]

5 wholes = 5
2 fifths = 2/5

5 - 2/5 = 4 3/5 (4 and 3 fifths)

Answer = 4 3/5

Check work:
4 3/5 + 2/5 = 5 (wholes)

3 0

3 years ago

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