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2 years ago

Find the mean of the given data set: (12, 2, 6, 3, 3, 19)

Mathematics

2 answers:

Savatey [412]2 years ago

4 0

Answer:

Step-by-step explanation:

hope this helps you

MakcuM [25]2 years ago

4 0

Answer: the mean is 7.5

Step-by-step explanation:

First u would add all of the numbers 12+2+6+3+3+19 to get 45

Then u have to divide the answer by how many numbers there are to get 7.5

That is how I got the answer 7.5.

Could u plz tell me if I’m wrong and sorry if I am. I have not done this in a while but I think that this is correct.

Have a fantastic day!

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The length of a rectangle is the width minus 3 units. The area of the rectangle is 40 units. What is the width, in units, of the

Eva8 [605]

The width of rectangle is 8 units.

Step-by-step explanation:

Given,

Area of rectangle = 40 units

Width = w

Length = w-3

Area = Length * Width

$40=(w-3)*w\\40=w^2-3w\\w^2-3w=40\\w^2-3w-40=0$

Factorizing the equation

$w^2-8w+5w-40=0\\w(w-8)+5(w-8)=0\\(w-8)(w+5)=0$

Either,

w-8=0 => w=8

Or,

w+5=0 =>w= -5

As width cannot be negative, therefore

Width of rectangle = 8 units

The width of rectangle is 8 units.

Keywords: area, rectangle

Learn more about rectangles at:

#LearnwithBrainly

6 0

2 years ago

What is "k" ? 20k+4+33k-9

kifflom [539]

I think it is -45
Hope this helps

7 0

3 years ago

PLEASE HELP. !!!!!!!!!

Elan Coil [88]

That question is already answered on brainly. Search it up

4 0

2 years ago

"18 less than a number"

Dmitriy789 [7]

Answer:

18 is 1 and 8 put togother.

Step-by-step explanation:

3 0

2 years ago

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Question 16 (Essay Worth 7 points)<br><br> Verify the identity.<br><br> tan (x + π/2) = -cot x

Rus_ich [418]

Step-by-step explanation:

We know that tan=sin/cos, so tan(x+π/2)=

$\frac{sin(x+pi/2)}{cos(x+pi/2)}$

Then, we know that sin(u+v)=sin(u)cos(v)+cos(u)sin(v),

so our equation is then

$\frac{sin(x)cos(\pi/2)+cos(x)sin(\pi/2)}{cos(x+\pi/2)} = \frac{cos(x)}{cos(x+\pi/2) }$

Then, cos(u+v)=cos(u)cos(v)-sin(u)sin(v), so our expression is then

$\frac{cos(x)}{cos(x)cos(\pi/2)-sin(x)sin(\pi/2)} = \frac{cos(x)}{-sin(x)} = -cot(x)$

6 0

2 years ago