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lilavasa [31]
2 years ago
7

9. Over a four-week period, Gail earned the following commissions:

Mathematics
1 answer:
fgiga [73]2 years ago
4 0
I think maybe it is B: $257.50 or C: 240.00
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The elevation of city A is 72 feet above sea level; the elevation of City C is 24 feet above sea level. The elevation of city D
emmasim [6.3K]

Answer:

<h2> D=C/4</h2>

Step-by-step explanation:

Given that elevation of the cities are

A=72 feet

C=24 feet

D=1/4 of C

The expression for the elevation of city D is

D=C/4

substituting C=24 in the expression we have

D=24/4

D=6

The answer is positive because the elevation is above sea level

7 0
3 years ago
A data set includes 108 body temperatures of healthy adult humans having a mean of 98.3degrees°F and a standard deviation of 0.6
mylen [45]
<h2>Answer with explanation:</h2>

The confidence interval for population mean is given by :-

\overline{x}\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

Given : Sample size : n=106

Sample mean : \overline{x}=98.3^{\circ}\ F

Standard deviation : \sigma= 0.69^{\circ}F

Significance level : \alpha: 1-0.99=0.01

Critical value : z_{\alpha/2}=2.576

Then , 99​% confidence interval estimate of the mean body temperature of all healthy humans will be :-

98.3\pm (2.576)\dfrac{0.69}{\sqrt{106}}\\\\\approx98.3\pm0.173=(98.3-0.173,\ 98.3+0.173)=(98.127,\ 98.473)

Since 98.6 is higher than the upper limit of the confidence interval (98.473), then this suggest that the mean body temperature could be lower then 98.6 degrees.

The best estimate of population mean is always the sample mean. \mu=\overline{x}=98.3^{\circ}\ F

7 0
3 years ago
Does anybody know this?
vagabundo [1.1K]

Answer:

  see attached

Step-by-step explanation:

Reflection in the line y=1 is accomplished by the transformation ...

  (x, y) ⇒ (x, 2 -y)

Each point in the image is as far below the line as the original point is above the line.

6 0
2 years ago
Solve the inequality <br> 2x-1/x &gt; 1
Grace [21]

Answer:

− 1 /2 < x < 0

or  x > 1

Step-by-step explanation:

Solve the inequality by finding the roots and creating test intervals.

Glad I could help!!

8 0
2 years ago
Read 2 more answers
Solve the following: 4x-1/2 = x+7
MArishka [77]

Answer:

x = 2.5

Step-by-step explanation:

4x-1/2 = x+7

  4x-x = 7+0.5

     3x = 7.5

       x = 2.5

8 0
1 year ago
Read 2 more answers
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