The coefficient of x in the expansion of<br>(x+3)(x-1) is<br>

Does coordinate m or coordinate n represent a greater number in the following parallelogram?

gavmur [86]

Coordinate m

Hope this helps

6 0

3 years ago

Read 2 more answers

If triangle RST equals triangle XYZ which statement must be true

alexandr402 [8]

Can you please attach a photo or put up answer choices? It would help a lot. Thanks.

4 0

3 years ago

Read 2 more answers

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

This table gives the minutes players spent practicing basketball free throws and the number of baskets they made when they were

kondor19780726 [428]

Answer:

0.79769, or 0.80 if you round it up

Step-by-step explanation:

8 0

3 years ago

If <ABC measures 100 and is inscribed in a circle O. find <BAO and <BCO

satela [25.4K]

Answer:

<BCO = <BAO = 20degrees

Step-by-step explanation:

If <ABC measures 100 and is inscribed in a circle O. find <BAO and <BCO

To get <BAO and <BCO, we need to get <AOC first.

From the figure, it can be seen that triangle ABC is an isosceles trinagle. Hence;

<BAC + <BCA + 100 = 180

Since <BAC = <BCA

<BAC + <BAC = 180 - 100

2<BAC = 80

<BAC = 80/2

<BAC = 40

Also;

<BAO = <BCO and <BAO = <BAC/2

<BAO = 40/2 = <BCO

Hence <BCO = <BAO = 20degrees

3 0

3 years ago

The coefficient of x in the expansion of(x+3)(x-1) is​

The coefficient of x in the expansion of(x+3)(x-1) is