Which fraction converts to a terminating decimal number?<br> OA.1/6<br> OB.2/9<br> OC.3/8<br> OD.4/7

PLSSS HELP IF YOU TURLY KNOW THISS

ryzh [129]

Answer:

5^3

Step-by-step explanation:

When it's multiplication you add the exponents.

Same with division, you subtract the exponents.

So obviously, 1+2=3.

5^3

I hope I could help!

6 0

3 years ago

Read 2 more answers

Kendal bought x boxes of cookies to bring to a party. Each boxes contain 12 cookies. She decided to keep 2 boxes for herself. Sh

DedPeter [7]

Answer:

7 boxes

Step-by-step explanation:

Let x represent the amount of cookies that was brought to the party by Kendall

Each box contain 12 cookies

= 12 × x

= 12x

Kendall keeps 2 boxes for herself

= 12 × 2

= 24

Kendall has 60 cookies which she took to the party

Therefore the question can be represented as follows

12x = 24+60

12x= 84

Divide both sides by the coefficient of x which is 12

12x/12= 84/12

x= 7

Hence Kendall brought 7 boxes

5 0

3 years ago

The boxes are shaped as right rectangular prisms. The larger box has a length of 24cm a width of 10 cm, and height of 30cm. The

irina1246 [14]

Answer:

900cm^2

Step-by-step explanation:

24, 10, 30 in half= 12, 5, 15 so, 12*5*15=900cm^2

5 0

4 years ago

A rectangular room measures 13 feet by 15 feet. It is going to be carpeted with carpeting that sells for

Brums [2.3K]

Answer:9 square ft I believe

5 0

3 years ago

A precision instrument is guaranteed to be accurate to within 2 units. A sample of four instrument readings on the same object y

morpeh [17]

Answer:

$\chi^2 =\frac{4-1}{0.7^2} 1.5^2 =13.776$

$p_v =P(\chi^2 >13.776)=0.0032$

In order to find the p value we can use the following code in excel:

"=1-CHISQ.DIST(13.776,3,TRUE)"

If we compare the p value and the significance level assumed we see that $p_v$ so on this case we have enough evidence in order reject the null hypothesis. And we can conclude that the true deviation i significantly higher than 0.7

Step-by-step explanation:

Notation and previous concepts

A chi-square test is "used to test if the variance of a population is equal to a specified value. This test can be either a two-sided test or a one-sided test. The two-sided version tests against the alternative that the true variance is either less than or greater than the specified value"

$n=4$ represent the sample size

We can calculate the sample deviation with this formula:

$s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}$

$\alpha$ represent the confidence level

$s =1.5$ represent the sample variance obtained

$\sigma^2 =0.7$ represent the value that we want to test

Null and alternative hypothesis

On this case we want to check if the population deviation is higher than 0.7, so the system of hypothesis would be:

Null Hypothesis: $\sigma \leq 0.7$

Alternative hypothesis: $\sigma >0.7$

Calculate the statistic

For this test we can use the following statistic:

$\chi^2 =\frac{n-1}{\sigma^2_0} s^2$

And this statistic is distributed chi square with n-1 degrees of freedom. We have eveything to replace.

$\chi^2 =\frac{4-1}{0.7^2} 1.5^2 =13.776$

Calculate the p value

In order to calculate the p value we need to have in count the degrees of freedom , on this case 3. And since is a right tailed test the p value would be given by:

$p_v =P(\chi^2 >13.776)=0.0032$

In order to find the p value we can use the following code in excel:

"=1-CHISQ.DIST(13.776,3,TRUE)"

Conclusion

If we compare the p value and the significance level assumed we see that $p_v$ so on this case we have enough evidence in order reject the null hypothesis. And we can conclude that the true deviation i significantly higher than 0.7

6 0

3 years ago

Which fraction converts to a terminating decimal number? OA.1/6 OB.2/9 OC.3/8 OD.4/7