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Tasya [4]
2 years ago
7

Which letter has point symmetry?

Mathematics
2 answers:
svetlana [45]2 years ago
6 0

Answer:

Letters A, M, and T

Step-by-step explanation:

All of these letters have a point of symmetry.

uranmaximum [27]2 years ago
3 0

Answer: m

Step-by-step explanation:

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A survey of 76 commercial airline flights of under 2 hours resulted in a sample average late time for a flight of 2.55 minutes.
nika2105 [10]

Answer:

The best point of estimate for the true mean is:

\hat \mu = \bar X = 2.55

2.55-1.96\frac{12}{\sqrt{76}}=-0.148    

2.55+1.96\frac{12}{\sqrt{76}}=5.248    

Since the time can't be negative a good approximation for the confidence interval would be (0,5.248) minutes. The interval are tellling to us that at 95% of confidence the average late time is lower than 5.248 minutes.

Step-by-step explanation:

Information given

\bar X=2.55 represent the sample mean for the late time for a flight

\mu population mean

\sigma=12 represent the population deviation

n=76 represent the sample size  

Confidence interval

The best point of estimate for the true mean is:

\hat \mu = \bar X = 2.55

The confidence interval for the true mean is given by:

\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}   (1)

The Confidence level given is 0.95 or 95%, th significance would be \alpha=0.05 and \alpha/2 =0.025. If we look in the normal distribution a quantile that accumulates 0.025 of the area on each tail we got z_{\alpha/2}=1.96

Replacing we got:

2.55-1.96\frac{12}{\sqrt{76}}=-0.148    

2.55+1.96\frac{12}{\sqrt{76}}=5.248    

Since the time can't be negative a good approximation for the confidence interval would be (0,5.248) minutes. The interval are tellling to us that at 95% of confidence the average late time is lower than 5.248 minutes.

7 0
3 years ago
Find the common denominator. Click all that applies. 1/4 and 1/2 3/12 and 6/12 3/12 and 6/12 1/4 and 1/2
kozerog [31]
There is a common denominator of 12 among those fractions.
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3 years ago
Jason bought 12 new CDs to add to his
BabaBlast [244]

Answer:

He had origanlly had 68 altogether

Step-by-step explanation:

Because if u count the scrateched ones which was 6 is now 62 then add the other six because there was 12 and his brother scrateched half which is basically 12 / 2 = 6 so if u add the six is 68

What Im basically saying is 56 + 12 = 68

5 0
3 years ago
Give an example of a combination of transformations that would map the white
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Answer:

bnnnnnnnbbbbbg

bandanas

abandons

dimensions

kskdkdjd

4 0
2 years ago
Find the missing length indicated<br> Please help, no links
Mars2501 [29]

Answer:

x = 48

Step-by-step explanation:

36/x = x/64

x² = 36 x 64 = 2304

x = √2304 = 48

7 0
2 years ago
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