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4 years ago

What does this mean I don’t quite get it.

Mathematics

1 answer:

vampirchik [111]4 years ago

4 0

The circumference of a circle is the length of the line making the circle.

To find circumference, the formula is

$2\pi \times r$
So, the answer to this problem would be 31.42

You might be interested in

Leni [432]

$\longrightarrow{\green{ x\:=\:12}}$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}$

$(x - 9) \frac{2}{3} = 2$

$➺ \: (x - 9) = 2 \times \frac{3}{2}$

$➺ \: x = 3 + 9$

$➺ \: x = 12$

Therefore, the value of $x$ is 12.

$\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}$

$(x - 9) \frac{2}{ 3} = 2$

$➺ \: (12 - 9) \frac{2}{3} = 2$

$➺ \: 3 \times \frac{2}{3} = 2$

$➺ \: 2 = 2$

$➺ \: L.H.S.=R. H. S$

Hence verified.

$\huge\bf\purple{*Mystique 35♡༉}$

6 0

3 years ago

The legs of a right triangle are x and 15 while the hypotenuse is 17.

Deffense [45]

Answer:

Since the Option of equation are not given. Kindly chose any of the below equation from the answer to find the value of 'x'.

$x^2+15^2=17^2$

$x^2=17^2-15^2$

$x^2+225=289$

$x^2=289-225$

Step-by-step explanation:

Given:

Length of One leg = x

Length of other Leg= 15

Hypotenuse = 17

We need to find the equation used to determine the value of x.

Solution:

Assuming Triangle to right angled triangle.

So we will apply Pythagoras theorem which sates that;

"The square of sum of two legs of right angle triangle is equal to square of the length of hypotenuse."

so we can say that;

$x^2+15^2=17^2$

$x^2=17^2-15^2$

$x^2+225=289$

$x^2=289-225$

Since the equation are not given. Kindly chose any of the below equation from the answer to find the value of 'x'.

$x^2+15^2=17^2$

$x^2=17^2-15^2$

$x^2+225=289$

$x^2=289-225$

5 0

3 years ago

Solve the equation for y in terms of x <br> 12x + 3y = 12

defon

Answer:

y = 4 - 4x

Step-by-step explanation:

Step 1: Write equation

12x + 3y = 12

Step 2: Subtract 12x on both sides

3y = 12 - 12x

Step 3: Divide both sides by 3

y = 4 - 4x

4 0

3 years ago

In doing so, you collect a random sample of 50 salespersons employed by his company, which is thought to be representative of sa

Deffense [45]

Answer:

$z=\frac{0.36 -0.45}{\sqrt{\frac{0.45(1-0.45)}{50}}}=-1.279$

$p_v =P(z$

And we can use the following code to find it "=NORM.DIST(-1.279,0,1,TRUE)"

Step-by-step explanation:

Assuming this complete problem: "The CEO of a software company is committed to expanding the proportion of highly qualified women in the organization's staff of salespersons. He believes that the proportion of women in similar sales positions across the country is less than 45%. Hoping to find support for his belief, he directs you to test

H0: p .45 vs H1: p < .45.

In doing so, you collect a random sample of 50 salespersons employed by his company, which is thought to be representative of sales staffs of competing organizations in the industry. The collected random sample of size 50 showed that only 18 were women.

Compute the p-value associated with this test. Place your answer, rounded to 4 decimal places, in the blank. For example, 0.3456 would be a legitimate entry."

1) Data given and notation

n=50 represent the random sample taken

X=18 represent the number of women in the sample selected

$\hat p=\frac{18}{50}=0.36$ estimated proportion of women in the sample

$p_o=0.45$ is the value that we want to test

$\alpha$ represent the significance level

z would represent the statistic (variable of interest)

$p_v$ represent the p value (variable of interest)

2) Concepts and formulas to use

We need to conduct a hypothesis in order to test the claim that the proportion of women is less than 0.45:

Null hypothesis: $p\geq 0.45$

Alternative hypothesis: $p < 0.45$

When we conduct a proportion test we need to use the z statistic, and the is given by:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

The One-Sample Proportion Test is used to assess whether a population proportion $\hat p$ is significantly different from a hypothesized value $p_o$ .

3) Calculate the statistic

Since we have all the info requires we can replace in formula (1) like this:

$z=\frac{0.36 -0.45}{\sqrt{\frac{0.45(1-0.45)}{50}}}=-1.279$

4) Statistical decision

It's important to refresh the p value method or p value approach . "This method is about determining "likely" or "unlikely" by determining the probability assuming the null hypothesis were true of observing a more extreme test statistic in the direction of the alternative hypothesis than the one observed". Or in other words is just a method to have an statistical decision to fail to reject or reject the null hypothesis.

The next step would be calculate the p value for this test.

Since is a left tailed test the p value would be:

$p_v =P(z$

And we can use the following code to find it "=NORM.DIST(-1.279,0,1,TRUE)"

4 0

3 years ago

What number can be added to 1.38 to get zero?

Effectus [21]

-1.38. Say thank you, UR WELCome

6 0

4 years ago