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3 years ago

5

Which of the following choices is the standard deviation of the sample shown here? 19,20,21,22,23

1 answer:

serg [7]3 years ago

6 0

Answer:

Answer : 42

Step-by-step explanation:

<h2>Hope this help :)</h2>

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Can someone please explain to me step by step how to do these

alexira [117]

2) 1/12 times 3/5 = 1*3 = 3 12*5 = 60 3/60 3 and sixty divided by 3
= 1/20 ANSWER

3) (-5/8)(-12/5) = the two 5's cancel each other. This becomes (-1/5)(-12/5) = 12/8 12 and 8 divided by 4
= 3/2 ANSWER

4) 6/7 divided by 8/7 becomes 6/7 times 7/8
7's cancel each other becomes 6/8
6 and 8 divided by 2
= 3/4 ANSWER

8 0

3 years ago

Limit question please?

Ksivusya [100]

The easiest way to evaluate the limit is to simply subsitute the value into the function

as x approaches -3
just subsitute -3 for x

(-3)³=(-3)(-3)(-3)=-27
answer is -27

7 0

3 years ago

Salve this a equation: 2.2x+19.246=2-2.36x ?

Elodia [21]

Answer:

4.56x=-17.246

x=-17.246/4.56

x-3.78

I would appreciate if my answer is chosen as a brainliest answer

4 0

3 years ago

Read 2 more answers

A circle has a diameter with endpoints at (6, 5) and (8, 5). Write the equation for the circle.

mario62 [17]

Answer:

$(x-7)^2+(y-5)^2=1$

Step-by-step explanation:

The two things that are required to formulate the equation of the circle is the center coordinate and the radius of the circle!

<u>Center of the circle:</u>

The center of the circle always lies at the midpoint of the endpoints of its diameter: Let's call the endpoints A(6,5) and B(8,5).

Using the midpoint formula we'll get:

$(x_m, y_m) = \left(\dfrac{x_1+x_2}{2},\dfrac{y_1+y_2}{2}\right)$

$(x_m, y_m) = \left(\dfrac{6+8}{2},\dfrac{5+5}{2}\right)$

$(x_m, y_m) = (7,5)$

This is the center coordinate of our circle.

<u>Radius: </u>

The radius of the circle is the distance from the center of the circle to any of the endpoints of the diameter (A or B)

We can use the distance formula:

$r = \sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$

$r = \sqrt{(x_1-x_m)^2+(y_1-y_m)^2}$

$r = \sqrt{(6-7)^2+(5-5)^2}$

$r = \sqrt{1^2}$

$r = 1$

<u>Equation of the circle: </u>

The equation is written as:

$(x-a)^2+(y-b)^2=r^2$

here, (a,b) are the center points of the circle

in our case this is $(a,b)=(x_m,y_m)=(7,5)$

and r = 1

$(x-7)^2+(y-5)^2=1^2$

$(x-7)^2+(y-5)^2=1$

This is the equation of the circle!

3 0

3 years ago

Does this set of ordered pairs represent a function? (-1,5)(0,-3)(2,7)(4,0)(7,5)

ruslelena [56]

Answer:

No

Step-by-step explanation:

You cant have 2 y values

6 0

2 years ago

Read 2 more answers