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svetlana [45]
2 years ago
14

Use pictures for the question 100 points to brainlyest​

Mathematics
1 answer:
Leviafan [203]2 years ago
7 0

Answer:

Step-by-step explanation:

Population of X is {1, 1, 2, 2, 2, 3, 3, 3}

Based on that, X's expected value, variance and standard deviation can be calculated as follows:

Expected Value, μ = 2.125 or 2.13

Variance, σ2 = 0.609375 0r 0.61

Standard Deviation, σ = 0.78062475 or 0.78

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Where on a coordinate graph are the first numbers before the dashes located?
Sauron [17]
Basiclly, we look at the 2 points below and find the distance between them, then we match

d=\sqrt{( x_{2} -x_{1} )^{2}+( y_{2}-y_{1} )^{2}}
when finding the distance between points (x1,y1) and (x2,y2)

if the x values, or y values are same, you don't need the distance formula, just use logic

(-10, 2) and (-2, 2)
the y value is the same so find the distance between the x values
from -10 to -2 is 8
8 matches with this one


(-3, -1) and (5, 1)
use distance formula
d=\sqrt{( 5-(-3) )^{2}+( 1-(-1) )^{2}}=√68


(-3, -2) and (1, 3)
input
d=\sqrt{( 1-(-3) )^{2}+(3-(-2))^{2}}=√41

(-3, -5) and (-2, -4)
input
d=\sqrt{( -2-(-3) )^{2}+( -4-(-5) )^{2}}=√2

(0, 0) and (5, 5)
input
d=\sqrt{( 5-0 )^{2}+( 5-0 )^{2}}=√50


(1, 2) and (1, -10)
x values are same so find distance between 2 and -10
answer is 12

(1, 2) and (5, 2)
y values are same
find distance between 1 and 5
answe ris 4


(2, 3) and (10, 9)
input
d=\sqrt{( 10-2 )^{2}+(9-3)^{2}}=10





ANSWERS (because the spacing has gone wierd)                                                           
(-10, 2) and (-2, 2)=8           
(-3, -1) and (5, 1)=√68             
(-3, -2) and (1, 3)=√41                       
(-3, -5) and (-2, -4)=√2             
(0, 0) and (5, 5)=√50             
(1, 2) and (1, -10)=12             
(1, 2) and (5, 2)=4               
(2, 3) and (10, 9)=10 

8 0
3 years ago
A pottery can make B bowls and P plates in a week according to the relation
Vilka [71]

Quadratic equations is an equation that has a standard form of a·x² + b·x + c = 0

The correct values are presented as follows;

(a) If the pottery makes 5 bowls a week, the number of plates that can be made is <u>18 plates</u>

<u />

(b) The maximum number bowls produced in a week is <u>15 Bowls</u>

<u />

The reason the above values are correct are as follows:

The given relation between the number of bowls, <em>B</em>, and plates, <em>P</em>, that can be made in a week is presented as follows;

2·B² + 5·B + 25·P = 525

(a) Required: The number of plates that can be made if five (5) bowls are made each week

Solution:

To find out the number of plates that can be made, the given number of bowls (5) is placed in the equation as follows;

When B = 5, we get;

2 × 5² + 5 × 5 + 25·P = 525

25·P = 525 - (2 × 5² + 5 × 5) = 450

P = 450/25 = 18

P = 18

If the pottery makes 5 bowls a week, the number of plates that can be made, P = <u>18 plates</u>

(b) Required: To find the maximum number of bowls that can be produced each week

Solution:

The given relation is rewritten as follows;

2·B² + 5·B + 25·P = 525

Given that the sum of the bowls <em>B</em>, produced and plates, <em>P</em>, produced is a constant, the maximum number of bowls is produced when the <em>minimum number of plates </em>are made

Therefore, when no plates are made, we get;

P = 0

2·B² + 5·B + 25×0 = 525

2·B² + 5·B = 525

2·B² + 5·B - 525 = 0

Factorizing with a graphing calculator, or by the quadratic formula, gives;

Calculator: (B - 15)·(2·B + 35) = 0

Quadratic formula: B = (-5 ± √(5² - 4 × 2 × (-525)))/(2 × 2)

∴ The maximum number bowls, B = 15 or -35/2

The positive value of <em>B</em> is used, therefore;

The maximum number bowls produced in a week = <u>15 Bowls</u>

Learn more about quadratic equation here:

brainly.com/question/18162688

6 0
3 years ago
What is the annual interest rate for 12% compounded quarterly for 6 years?
mamaluj [8]

COMPOUND INTEREST

Compounded Calculation Interest Rate For One Period

Semiannually, every 6 months, every half of a year (.06)/2 0.03

Annually, every year .06 .06

6% means 6 percent (from Medieval Latin for per centum, meaning "among 100"). 6% means 6 among 100, thus 6/100 as a fraction and .06 as a decimal

Does this help you?

5 0
3 years ago
Which answer describes the graph of the system of equations?
Natalija [7]

Answer:

the lines coincide

Step-by-step explanation:

i think, hope this helps.

4 0
3 years ago
Read 2 more answers
The area of each book is 63 in2. The height of the stack is 15.75 inches. What is the volume of the stack of books? A) 337.85 in
Reptile [31]
We know that

[the volume of the stack of books]=[area of each book]*[<span>height of the stack]
</span>area of each book=63 in²
height of the stack=15.75 in
<span>so
</span>[the volume of the stack of books]=[63 in²]*[15.75 in]=992.25 in³<span>

the answer is 
</span>D) 992.25 in³
6 0
3 years ago
Read 2 more answers
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