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3 years ago

Find the sum of the angle of each polygon

Mathematics

1 answer:

olganol [36]3 years ago

5 0

Answer:

The sum of interior angles of n side convex polygon: (n-2)*180°

The sum of exterior angles of n side convex polygon: 360°

Step-by-step explanation:

The sum of interior angles of n side convex polygon: (n-2)*180°

The sum of exterior angles of n side convex polygon: 360°

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Am so confused is it A or D and this lesson is 7.8 plz answer and if u want you can explain why it is A or D .

kogti [31]

Subtract to get your answer.
So, 3 1/6- 1 4/6
Make improper fractions so easier to subtract
19/6-10/6=9/6= 1 3/6
So your answer is A.
(It couldn’t be D because that’s more than you even started with.)

6 0

3 years ago

(fg)-1(5)=g-1f-1(5)

larisa86 [58]

Answer:

f = g/ g+1

Step-by-step explanation:

Remove Parenthesis.

fg - 1 x 5 = g - 1 x f - 1 x 5

Cancel -1 x 5 on both sides.

fg = g - 1 x f

Simplify 1 x f to f.

fg = g - f

Add f to both sides.

fg + f = g

Factor out the common term f.

f (g + 1) = g

Divide both sides by g + 1

f = g/ g + 1

6 0

3 years ago

A simple random sample of 100 8th graders at a large suburban middle school indicated that 87% of them are involved with some ty

UkoKoshka [18]

Answer:

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

And the margin of error is given by:

$ME = 1.96 *\frac{0.87*(1-0.87)}{100} = 0.0659$

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

Solution to the problem

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by $\alpha=1-0.95=0.05$ and $\alpha/2 =0.025$ . And the critical value would be given by:

$z_{\alpha/2}=-1.96, z_{1-\alpha/2}=1.96$

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

And the margin of error is given by:

$ME = 1.96 *\frac{0.87*(1-0.87)}{100} = 0.0659$

5 0

3 years ago

How do I change 6.5 as a mixed number?

elena-s [515]

6.5 = 6 5/10 = 6 1/2 as a mixed number ^.?

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3 years ago

What is the difference between 3x hdmi and 4x hdmi?

zzz [600]

There is a global standard for connecting high-definition electronics and PC products. HDMI technology helps in providing people with the highest signal possible to meet the current needs of HD entertainment systems with only a single cable that it uses for transmission. Currently, every new digital TV must have at least one HDMI port and the the connectivity has been standardized on one range of electronic products. 2x, 3x, 4x is the number of HDMI ports. This implies that 4x has more ports than 3x.

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3 years ago