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3 years ago

Show me how to do 0.2268÷0.84

Mathematics

1 answer:

vazorg [7]3 years ago

6 0

Answer:

0.27

Step-by-step explanation:

1. put it into the division form which is 0.2268/ 0.84.

2. then see if 0.84 can go into 0.22 if not then 0.226

3. if yes see how many times it can go into 0.226 which is 2.

4. continute these steps until there is no remainder

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From the set {5, 15, 23), which of the values can be substituted for m to make the

Arlecino [84]

Answer:

its A and i am sure her is the explanation

Step-by-step explanation:

m<19-4
m<15

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3 years ago

Which algebraic expression is a monomial term?

ICE Princess25 [194]

Answer:

Step-by-step explanation:

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The one-term expression is ...

45x³y

<em>Additional comments</em>

If the coefficient of a one-term expression is negative, there will be a leading minus sign. There won't be another term on the other side of that sign.

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1 year ago

11.1 x 0.8 x 1.16 x 0.4

makkiz [27]

Answer: 4.12032 which is also equivalent to 4:12

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3 years ago

A random sample of the costs of repair jobs at a large muffler repair shop produces a mean of $127.95. and a standard deviation

lubasha [3.4K]

Answer:

$127.95-1.685\frac{24.03}{\sqrt{40}}=121.55$

$127.95 +1.685\frac{24.03}{\sqrt{40}}=134.35$

So on this case the 90% confidence interval would be given by (121.55;134.35)

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".

$\bar X=127.95$ represent the sample mean for the sample

$\mu$ population mean (variable of interest)

s=24.03 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)

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

$df=n-1=40-1=39$

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(0.05,39)".And we see that $t_{\alpha/2}=1.685$

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

$127.95-1.685\frac{24.03}{\sqrt{40}}=121.55$

$127.95 +1.685\frac{24.03}{\sqrt{40}}=134.35$

So on this case the 90% confidence interval would be given by (121.55;134.35)

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3 years ago

Rotational symmetry is the quality a design has if it maintains all characteristics when it is rotated about an axis lying in it

mrs_skeptik [129]

Answer – TrueA design is said to have Rotational symmetry if all its characteristics remain the same after it has been rotated about an axis lying in its plane. In other words, rotational symmetry is the quality possessed by a shape has when it looks the same after it has undergone some rotation by a partial turn about an axis lying in its plane. Rotational symmetry is also referred to as radial symmetry.

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3 years ago

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