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3 years ago

CAN SOMEONE FIND THE ANSWER TO NUMBER 10 AND 14!!!! I WILL GIVE 10 POINTS AND BRAINLIEST

Mathematics

2 answers:

jok3333 [9.3K]3 years ago

6 0

Answer:

10. 67.36 14. 138.72

Step-by-step explanation:

IgorC [24]3 years ago

5 0

Answer:

10) 67.36

14) 400.35

Step-by-step explanation:

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What is the equation of the line that is parallel to the given

OLEGan [10]

Answer is 2/3 + 2

Look at the image and if you need further explains I will be glad to.

4 0

4 years ago

Your teacher will report the mean and standard deviation of the sampling distribution created by the class.

sukhopar [10]

Answer:

$\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}$

$\hat p = 0.493$

And the deviation is given by this formula:

$s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085$

And as we can see the population proportion expected for the number of heads 0.5 is very close to the mean of the sampling distribution, the error is :

$\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%$

Step-by-step explanation:

Assuming the data on the figure attached. We ar assuming that this is a sampling distribution of sample proportions of heads in 40 flips of a coin.

As we can see we have the following values:

0.25, 0.35, 0.375,0.375, 0.40,0.40,0.40, 0.425,0.425,0.425, 0.45,0.45,0.45,0.45, 0.475,0.475,0.475, 0.475,0.475, 0.50,0.50,0.50, 0.525,0.525,0.525,0.525, 0.55,0.55,0.55,0.55,0.55, 0.575,0.575,0.575 0.575, 0.575, 0.60,0.60, 0.65,0.65

And we can calculate the sample proportion with the following formula:

$\hat p = \frac{\sum_{i=1}^{40} \hat p_i}{40}$

$\hat p = 0.493$

And the deviation is given by this formula:

$s_{\hat p}= \frac{\sum_{i=1}^{40} (\hat p_i - \hat p)^2}{n-1}= 0.085$

And as we can see the population proportion expected for the number of heads 0.5 is very close to the mean of the sampling distribution, the error is :

$\% Error = \frac{0.5-0.493}{0.5}* 100 = 1.4\%$

4 0

3 years ago

Rewrite f(x) = 3(x-2)^2+1 from vertex form to standard form

MatroZZZ [7]

Answer:

3x² - 12x + 13

Step-by-step explanation:

given

f(x) = 3(x - 2)² + 1 ← expand (x - 2)²

= 3(x² - 4x + 4) + 1

= 3x² - 12x + 12 + 1

= 3x² - 12x + 13 ← in standard form

5 0

3 years ago

What is the solution to the inequality 5.25 – b ≥ 6.5? A number line going from negative 5 to positive 5. A solid circle appears

Reil [10]

Given:

The inequality is

$5.25-b\geq 6.5$

To find:

The solution of the given inequality on the number line.

Solution:

We have,

$5.25-b\geq 6.5$

Subtract 5.25 from both sides.

$5.25-b-5.25\geq 6.5-5.25$

$-b\geq 1.25$

Multiply both sides by -1 and change the sign of inequality.

$b\leq -1.25$

The value of b always less than or equal to -1.25. Since -1.25 included in the solution set, therefore there is a solid circle on -1.25.

-1.25 lies between -2 and -1. It means the solid circle lies between -1 and -2.

$b\leq -1.25$ , so the number line is shaded from the circle to negative 5.

A number line going from negative 5 to positive 5 is the required solution if a solid circle appears between negative 1 and negative 2. The number line is shaded from the circle to negative 5.

Therefore, the correct option is A.

5 0

4 years ago

Find the absolute minimum and absolute maximum of f(x,y)=14−7x+10y f(x,y)=14−7x+10y on the closed triangular region with vertice

Black_prince [1.1K]

Answer:

Maximum value of f(x,y) at (10,13)=74

Minimum value of f(x,y) at (10,0)=-56

Step-by-step explanation:

We are given that

$f(x,y)=14-7x+10y$