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3 years ago

Explain how we do decimals plus Fractions

2 answers:

6 0

You can convert the fractions into a decimal, or a decimal into a fraction. I find that fractions into decimals is easier because with fractions you have the added step of making sure the two numbers have the same denominator.

Also, if you type in the numerator of the fraction divided by the denominator into a calculator, it will automatically give you the decimal. It is a lot harder to convert decimal into fractions if your calculator doesn’t do it.

Oliga [24]3 years ago

4 0

Answer:

You have to either make the fraction a decimal, or you have the decimal a fraction. Also when making it into a fraction, you should have the same denominator.

Step-by-step explanation:

I hope this helped.

You might be interested in

Find 3 ordered pairs for each equation Y= 5x+1 Y=10 - x Y= 2x

tangare [24]

1. (0,1) , (1,6) , (2,11)

2. (0,10) , (1,9) , (2,8)

3. (0,0) , (1,2) , (2,4)

hope this helps.

5 0

2 years ago

A random sample of 9 wheels of cheese yielded the following weights in pounds has a sample mean of 20.90 and a sample variance o

Ronch [10]

Answer:

$2.002 \leq \sigma^2 \leq 11.365$

Step-by-step explanation:

1) Data given and notation

s represent the sample standard deviation

$s^2$ represent the sample variance

n=9 the sample size

Confidence=90% or 0.90

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 mean or variance 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.

The Chi Square distribution is the distribution of the sum of squared standard normal deviates .

2) Calculating the confidence interval

The confidence interval for the population variance is given by the following formula:

$\frac{(n-1)s^2}{\chi^2_{\alpha/2}} \leq \sigma \frac{(n-1)s^2}{\chi^2_{1-\alpha/2}}$

On this case we need to find the sample standard deviation with the following formula:

$s=sqrt{\frac{\sum_{i=1}^9 (x_i -\bar x)^2}{n-1}}
The sample variance given was [tex]s^2=3.45$

The next step would be calculate the critical values. First we need to calculate the degrees of freedom given by:

$df=n-1=9-1=8$

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 values.

The excel commands would be: "=CHISQ.INV(0.05,8)" "=CHISQ.INV(0.95,8)". so for this case the critical values are:

$\chi^2_{\alpha/2}=15.507$

$\chi^2_{1- \alpha/2}=2.732$

And replacing into the formula for the interval we got:

$\frac{(9)(3.45)}{15.507} \leq \sigma \frac{(9)(3.45)}{2.732}$

$2.002 \leq \sigma^2 \leq 11.365$

7 0

3 years ago

Which represents the solution(s) of the equation x2 = 289?

sergeinik [125]

Answer:

B) x = +/- 17

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

This is a standard deviation contest. Which of the following sets of four numbers has the smallest possible standard deviation?

Maksim231197 [3]

B option is right I think.

6 0

3 years ago

CONSTRUCTED RESPONSE

Digiron [165]

The fraction for the above ratio is 5/9

Where 5- no of cups of bread crumbs needed; 9= pounds of ground beef needed

Step-by-step explanation:

Anything that can be represented in the x/y form constitutes the fraction.

The above statement can be represented in the fraction form as 5/9. It means that for every 9 pounds of ground beef, 5 cups of bread crumbs are needed.

The above fraction provides the ratio in the form of cups of bread crumb/ pound of ground beef required. Where 5 represents the number of cups of bread crumbs required, 9 represents the pound of ground beef needed for the same.

3 0

3 years ago