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3 years ago

SCREENSHOT BELOW PLEASE HELP ME

Mathematics

2 answers:

umka2103 [35]3 years ago

5 0

Answer:

9/40?

Step-by-step explanation:

alisha [4.7K]3 years ago

5 0

1/8 is the answer to your question.

First, let’s add all the times she’s rolled together. We would get 40.

Next, let’s check how many times she got 6, which is 5 times.

We would get 5/40, considering thats not an answer, we would have to reduce. If we reduced to the maximum point, we would get 1/8

Therefore, 1/8 is your answer. :))

Please mark brainliest if this helped you out.

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Given below are seven observations collected in a regression study on two variables, x (independent variable) and y (dependent v

natka813 [3]

Answer:

Step-by-step explanation:

Hello!

Given the independent variable X and the dependent variable Y (see data in attachment)

The regression equation is

^Y= b₀ + bX

Where

b₀= estimation of the y-intercept

b= estimation of the slope

The formulas to manually calculate both estimations are:

$b= \frac{sumXY-\frac{(sumX)(sumY)}{n} }{sumX^2-\frac{(sumX)^2}{n} }$

$b_0= \frac{}{y} - b*\frac{}{x}$

n=7

∑X= 42

∑X²= 292

∑Y= 49

∑Y²= 403

∑XY= 249

$\frac{}{y} = \frac{sumY}{n} = \frac{49}{7} = 7$

$\frac{}{x} = \frac{sumX}{n} = \frac{42}{7} = 6$

$b= \frac{249-\frac{42*49}{7} }{292-\frac{42^2}{7} }= -1.13$

$b_0= 7- (-1.13)*6= 13.75$

^Y= 13.75 - 1.13X

Using the raw data you can calculate the coefficient of determination as:

$R^2= \frac{b^2[sumX^2-\frac{(sumX)^2}{n} ]}{[sumY^2-\frac{(sumY)^2}{n} ]}$

$R^2= \frac{(-1.13)^2[292-\frac{(42)^2}{7} ]}{[403-\frac{(49)^2}{7} ]}= 0.84$

This means that 84% of the variability of the dependent variable Y is explained by the response variable X under the model ^Y= 13.75 - 1.13X

I hope this helps!

6 0

4 years ago

PLEASE HELP MARKING BRAINLIEST

xeze [42]

Answer:

a5 =243 x (1/3)^(5-1) = 243x 1/81 =3

Explanation

a(n) = a(1) x r^(n-1)

4 0

3 years ago

12. Four less than the quotient of a number and 3 is -10.

Scilla [17]

Answer:

n/3 - 4 = 10

Step-by-step explanation:

hope this helps

5 0

3 years ago

What is the area of a sector with a central angle of 3pi/5 radians and a diameter of 21.2cm

Elenna [48]

Answer: 105.84 cm^2

To find the answer, first you have to start by finding the percent of the circle in the sector. Convert the radians given to 108 degrees. 108 out of 360 is 30%.

Now, find the area of the circle. It's pi x r^2, so the area is 352.810.

Multiply this by 30% to find our area of 105.84 cm^2

8 0

3 years ago

Determine the distance between the following two points.

Morgarella [4.7K]

Answer:

The distance is 5

Step-by-step explanation:

You can use the distance formula or Pythagorean theorem for this

6 0

3 years ago