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4 years ago

Box 2:

Mathematics

2 answers:

Stells [14]4 years ago

8 0

ANSWER:

All of the answers are right the one above me

Step-by-step explanation:

mestny [16]4 years ago

4 0

Degree of length=1

Degree of width=1

Degree of height=3

Degree of volume=5

The [SUM] of the degree of each factor is the degree of the product

Why does this make sense Answer is C

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If Point M has a coordinate of -1 and MN = 7, what are the possible coordinates of point N?

scoray [572]

Answer:

draw a graph and plot it with you already are given

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3 years ago

I need the answer and the path work ok

Naily [24]

The circumference of the base of the cone = (240/360) * 2 * 21 * pi = 28pi cm

If r is the radius of the cone then 2 pi r = 28 pi

2r = 28
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The answer is 14 cm

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3 years ago

in a study of speed dating, male subjects were asked to rate the attractiveness of their female dates, and a sample of the res

Rudik [331]

Answer:

$7-1.796\frac{2.216}{\sqrt{12}}=5.851$

$7+1.796\frac{2.216}{\sqrt{12}}=8.149$

So on this case the 90% confidence interval would be given by (5.851;8.149)

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".

$\bar X$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s represent the sample standard deviation

n represent the sample size

Solution to the problem

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

$\bar X \pm t_{\alpha/2}\frac{s}{\sqrt{n}}$ (1)

Data: 7 8 2 10 6 5 7 8 8 9 5 9

In order to calculate the mean and the sample deviation we can use the following formulas:

$\bar X= \sum_{i=1}^n \frac{x_i}{n}$ (2)

$s=\sqrt{\frac{\sum_{i=1}^n (x_i-\bar X)}{n-1}}$ (3)

The mean calculated for this case is $\bar X=7$

The sample deviation calculated $s=2.216$

In order to calculate the critical value $t_{\alpha/2}$ we need to find first the degrees of freedom, given by:

$df=n-1=12-1=11$

Since the Confidence is 0.90 or 90%, the value of $\alpha=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.05,11)".And we see that $t_{\alpha/2}=1.796$

Now we have everything in order to replace into formula (1):

$7-1.796\frac{2.216}{\sqrt{12}}=5.851$

$7+1.796\frac{2.216}{\sqrt{12}}=8.149$

So on this case the 90% confidence interval would be given by (5.851;8.149)

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3 years ago

I need the answer for this 2120 = 18x + 320

grigory [225]

Answer:

100

Step-by-step explanation:

we need to swap sides so we take the 320 and put it in the other side but in negative form and that comes out to 1800 and then we divide that by 18

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3 years ago

Read 2 more answers

Does anyone know what the code is Ive been stuck on this for like ever.

timama [110]

Answer:

Binary code

Step-by-step explanation:

Code is a word or a symbol which is not disclosed to everyone and is considered as secretive. There are various codes which are required to run a software in order to minimize the risk of piracy. These codes are binary codes or java codes. These are complex so that not everyone can crack it.

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4 years ago