Ask question

Ask question

All categories

3 years ago

8

Describe the process you would use to create the perpendicular bisector to a segment XY using only an unmarked straightedge and

an unmarked compass pls help

1 answer:

laiz [17]3 years ago

3 0

Please reference the attached diagram.

Set the compass to a radius greater than half the distance between X and Y
Mark arcs on either side of the segment XY using X as a center
Mark arcs on either side of the segment XY using Y as a center
Draw a line (JK) between the points where the arcs intersect. This is your perpendicular bisector.

You might be interested in

Please, I need help ASAP!

enot [183]

Answer:

A

Step-by-step explanation:

You can eliminate B and D because it’s using $\frac{g}{f}$ , but the question is asking $\frac{f}{g}$ . So it’s either A or C. They are both written correctly, but out of the two, A is correct because just that x ≠ $\sqrt{7}$ part of it is what makes it true.

The reason being is that the only thing that won’t make $\frac{2x+1}{x^{2}-7 }$ true is when the denominator equals 0, because anything divided by 0 is undefined. So, when you plug $\sqrt{7}$ for x in the denominator you get: $\sqrt{7^{2} } -7$ . The $\sqrt{7^{2} }$ part just turns into 7, and 7 - 7 is 0. So you don’t want x to equal $\sqrt{7}$ .

<u>So the answer is A:</u> $\frac{2x+1}{x^{2}-7}$ , $x\neq$ ± $\sqrt{7}$

There you go my friend!

I hope you understand and that this helps with your question! :)

7 0

3 years ago

In 2008, there were 197,214 traffic collision related injuries. This works out to ____ per day.

Anni [7]

There are several information's already given in the question. Based on those information's the answer can be easily deduced.

Number of days in the year 2008 = 366
Number of traffic collisions in the year 2008 = 197214
Then
Number of t<span>raffic collision related injuries per day = 197214/366
= 538.84
= 540
</span><span>This works out to 540 per day. The correct option is option "C".</span>

4 0

3 years ago

To estimate a population mean, the sample size needed to provide a margin of error of 3 or less with a 95% confidence when the p

Over [174]

Answer:

The minimum sample needed to provide a margin of error of 3 or less is 52.

Step-by-step explanation:

The confidence interval for population mean (<em>μ</em>) is:

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

The margin of error is:

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

<u>Given:</u>

MOE = 3

<em>σ </em>= 11

The critical value for 95% confidence interval is: $z_{\alpha /2}=1.96$

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

Compute the sample size (<em>n</em>) as follows:

$MOE= z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=1.96\times \frac{11}{\sqrt{n}}\\n=(\frac{1.96\times11}{3} )^{2}\\=51.65\\\approx52$

Thus, the minimum sample needed to provide a margin of error of 3 or less is 52.

7 0

3 years ago

Use the zero product property to find the solitions to the equation(x+2)(x+3)=12.

kykrilka [37]

Answer:

(x + 2) (x + 3) = x² + 3x + 2x + 6 = 12 (multiply the binomials)

(x + 2) (x + 3) = x² + 5x + 6 = 12

(x + 2) (x + 3) = x² + 5x + 6-12 = 0 (add the like term and bring the positive 12 to the other side which makes it negative)

x² + 5x + 6 = 0

Using the snowflake method - (finding the factors of 6 that adds/subtracts to give you 5).

This method will give you the factors (x + 6)(x - 1)

ZERO PROPERTY RULE:

(x + 6) = 0

x = -6

(x - 1) = 0

x = 1

The two solutions to the equation are -6 and 1.

7 0

3 years ago

The product of g and 4 is 88<br> x= ?

Evgesh-ka [11]

Answer:

x = 22

Step-by-step explanation:

22 x 4 = 88

4 0

3 years ago