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LenaWriter [7]
2 years ago
15

PLEASE HELP ME PLEASE PLEASE PLEASE

Mathematics
1 answer:
faltersainse [42]2 years ago
8 0

Answer:

y=6x+11

Step-by-step explanation:

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The scale of a model is 0.5in : 6 ft. find the length of the model for an actual length of 204 ft
NNADVOKAT [17]

Answer:

17 in

Step-by-step explanation:

.5 in : 6 ft

204/6 x .5 = 17

8 0
2 years ago
Complete the similarity for the two triangles shown. <br><br> Triangle ABC
gizmo_the_mogwai [7]

Answer:

triangle EFD

Step-by-step explanation:

5 0
3 years ago
ccording to the U.S. National Weather Service, at any given moment of any day, approximately 1000 thunderstorms are occurring wo
viva [34]

Answer:

The critical value of <em>z</em> for 99% confidence interval is 2.5760.

The 99% confidence interval for population mean number of lightning strike is (7.83 mn, 8.37 mn).

Step-by-step explanation:

Let <em>X</em> = number of lightning strikes on each day.

A random sample of <em>n</em> = 23 days is selected to observe the number of lightning strikes on each day.

The random variable <em>X</em> has a sample mean of, \bar x=8.1\ mn and the population standard deviation, \sigma=0.51\ mn.

The (1 - <em>α</em>)% confidence interval for population mean <em>μ</em> is:

CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}

Compute the critical value of <em>z</em> for 99% confidence interval is:

z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.5760

*Use a <em>z</em>-table.

The critical value of <em>z</em> for 99% confidence interval is 2.5760.

Compute the 99% confidence interval for population mean number of lightning strike as follows:

CI=\bar x\pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}\\=8.1\pm2.5760\times\frac{0.51}{\sqrt{23}}\\=8.1\pm0.2738\\=(7.8262, 8.3738)\\\approx(7.83, 8.37)

Thus, the 99% confidence interval for population mean number of lightning strike is (7.83 mn, 8.37 mn).

The 99% confidence interval for population mean number of lightning strike  implies that the true mean number of lightning strikes lies in the interval (7.83 mn, 8.37 mn) with 0.99 probability.

3 0
2 years ago
Determine the equation for the parabola graphed below
Elza [17]

Answer:

y=(x-2)^2-1

Step-by-step explanation:

The given function:

Since the function  is open upwards means is of y=x^2

And we can see one unit down and 2 units shifted on right in parent function.

Therefore, the function is of y=(x-2)^2-1

Graph takes parabola shape by quadratic function.

4 0
3 years ago
Find the value of x.<br> <br> <br> A. 76<br> B. 98<br> C. 66<br> D. 122
cluponka [151]
The answer is B.98 
180-122=58
58+24=82
180-82=98
Hope it helped
4 0
3 years ago
Read 2 more answers
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