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Sloan [31]
3 years ago
8

Hi how to do quetion3?​

Mathematics
1 answer:
svp [43]3 years ago
3 0
I cant really read it that well D:
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Please help me in Geometry!
Masja [62]

Answer:

You get an perpendicular line through given point.

Step-by-step explanation:

In this method of drawing perpendicular line through given point,

you will draw an arc from given point R, so as to cut given line at A and B.

now ,length RA will be equal to length RB (radius of circle)

now, with length RA you will place compass at A and B to cut the arcs at point P (let) on other side of given line.Now, join PA and PB.  

The closed RAPB makes a rhombus and diagonal bisect perpendicularly in rhombus.

so you get an perpendicular line through given point.

8 0
3 years ago
Read 2 more answers
Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t
SVEN [57.7K]

Answer:

The minimum sample size required is 207.

Step-by-step explanation:

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}}

The margin of error of this confidence interval is:

MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}

Given:

MOE=3\\\sigma=29\\z_{\alpha /2}=z_{0.01/2}=z_{0.05}=2.576

*Use a <em>z</em>-table for the critical value.

Compute the value of <em>n</em> as follows:

MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=2.576\times \frac{29}{\sqrt{n}} \\n=[\frac{2.576\times29}{3} ]^{2}\\=206.69\\\approx207

Thus, the minimum sample size required is 207.

3 0
3 years ago
Simplify 9-[3+2•3] if anyone could help me with this question
Butoxors [25]

do what is in the parenthesis first and you multiply first. 3x2 is 6. 6+3 is 9. 9-9 = 0

I think the answer is 0


3 0
3 years ago
Can someone please help
r-ruslan [8.4K]

Answer:  5y^3-7x^5

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Solve the equation using square roots.x2-14=-10
ElenaW [278]

Answer:

x=2

Step-by-step explanation:

x^{2} -14=-10\\

Add 14 to both sides

x^{2}=4

Square root it

x=2

8 0
3 years ago
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