for the probability density function, over the given interval, find e(x), e(), the mean, the variance, and the standard deviation. f(x) , over [a,b] 1/b-q

Answer:

[tex]x = 50[/tex]

Step-by-step explanation:

[tex]52 + 78 + x = 180[/tex]

[tex]130 + x = 180[/tex]

[tex]x = 180 - 130[/tex]

[tex]x = 50[/tex]

Answer:

1.) 40.0 2.) 75.00 3.) 140.00 4.) 200.00 5.) 500.00 6.) 1300.00 7.) 70.0000

8.) 10.00 9.) 245.00 10.) 900.00

Answer: 20, I believe

Step-by-step explanation: You already have 500 which is half of 1000. 500 divided by 25 equals 20.

Answer:

27.7

Step-by-step explanation:

Area = πr²

49²/π = r²

r = 49/√π = 49/1.77 = 27.7

Answer:

im fanna join      

Step-by-step explanation:

Answer:

Step-by-step explanation:

f(-9)=2(-9)²+5(-9)+20

      = 162-45+20

      = 137

Answer:

137

Step-by-step explanation:

f(-9) = 2(-9)^2 + 5(-9) + 20

= 162 - 45 + 20

= 137

Answer:

c

Step-by-step explanation:

The expression equivalent to this expression is 2(3x+16)

Data;

The given expression is 4(x+x+7) -2x + 8 -4

Let's simplify this

[tex]4(x+x+7) -2x +8 - 4\\4(2x+7) -2x +4 = 8x + 28 - 2x + 4 = 6x + 32[/tex]

This can be simplified as

[tex]6x+ 32 = 2(3x + 16)[/tex]

The expression equivalent to this expression is 2(3x+16)

Learn more on equivalent expression here;

https://brainly.com/question/405965

Answer:

-18

Step-by-step explanation:

g(x)=-5x+2

g(4)=-5(4)+2=-20+2=-18

Answer:

-18

Step-by-step explanation:

Answer:

(1, 2 )

Step-by-step explanation:

Given the 2 equations

y = - 3x + 5 → (1)

5x - 4y = - 3 → (2)

Substitute y = - 3x + 5 into (2)

5x - 4(- 3x + 5) = - 3 ← distribute and simplify left side

5x + 12x - 20 = - 3

17x - 20 = - 3 ( add 20 to both sides )

17x = 17 ( divide both sides by 17 )

x = 1

Substitute x = 1 into (1) for corresponding value of y

y = - 3(1) + 5 = - 3 + 5 = 2

solution is (1, 2 )

Answer:

x = 1 and y = 2

Step-by-step explanation:

y + 3x = 5 -------------> (1)

-4y + 5x = -3 -------------> (2)

(1) * 4

=> 4y + 12x = 20 --------> (3)

(3) + (2)

=> 0y + 17x = 17

=> 17x = 17

by dividing both sides by 17

=> x = 1

by putting x = 1 into (1)

=> y + 3*1 = 5

=> y + 3 = 5

=> y = 5 - 3

=> y = 2

Answer:

4x - 36

Step-by-step explanation:

Answer:

x=40°

Step-by-step explanation:

Every triangles area equals 180

75+65=140

180-140=40

Answer:

40

Step-by-step explanation:

All angles in a triangle add up to 180°.

65° + 75° + x° = 180

140° + x° = 180°

-140          -140

x° = 40°

Answer:

y=22x

Step-by-step explanation:

If x=1 and y=22 then y=22x

Answer:

Most of the time, it is because they need the military aid or the resources that a certain country needs. That's kinda what the UN is all about is aiding each other in times of war

Step-by-step explanation:

Answer:

Because when make allies, they have someone to have their back.

Step-by-step explanation:

For example, If you're in a fight, you're gonna need backup. In war, you need as many people as you can to take down the villain (your opponent). Which means people, ammo, guns, bombs, support, and inside spies. All of this helps and will be easier to defeat the person per-say.

Answer:

Giant

Step-by-step explanation:

Giant: .30c a can

Safeway: .33c a can

Step-by-step explanation:

[tex] {9}^{2} = {6}^{2} + {x}^{2} \\ 81 = 36 + {x}^{2} \\ {x}^{2} = 45 \\ x = 6.71 \: ft[/tex]

6.71 is answer ok plz MARK me as BRAINLIST

Answer:

a is how many times bella went 2 yard depot

b is how many gardening gloves she bought

c is how many gardening hats she bought

Answer:

x  <  8

Step-by-step explanation:

First you divide 18 by 3, which gives you 6.

x  −  2  <  6

Then, you add 2 to 6, which gives you 8, which leaves you with :

x  <  8

:)

Answer:

X<8

Step-by-step explanation:

Distribute the 3 to get 3x-6<18. Then add the 6 to 18 leaving 3x<24. Then divide 24 by 3 to leave x by itself. x<8

I hope this helped! :)

Answer:This number is classified as rational

Step-by-step explanation: Have a great day!

Answer:

Option C it is sure

,

A

trust me looooooooooll

Answer:

2.4 or 2[tex]\frac{2}{5}[/tex]

Step-by-step explanation:

Let's set this up:

We have 3/1[tex]\frac{1}{4}[/tex]

That's also 3/1.25

For division, we don't divide if there is a fraction, so we move the decimal place over to the right for both the numbers

300/125

Then you long divide as normal:

And it's really hard to show how to long divide on a computer so I'm just going to go ahead and assume you know how to.

But the answer to that would be 2.4 or 2[tex]\frac{2}{5}[/tex]

Thank you, let me know if you have any questions.

Answer:

Step-by-step explanation:

[tex]\frac{146}{\pi}\\ \\ \text{Pi is irrational and cannot be expressed as a ratio of two integers.}\\ \\ \frac{146}{\pi}\approx 46.47[/tex]

Answer:

b

Step-by-step explanation:

Answer:

(5,0)=x1,y1

(0,3)=x2,y2

so the range will be x1-x2/

Answer:

-73

Step-by-step explanation:

-4(5)^2+3(5)+12

5^2=25

25*-4=-100

-100+15+12=-73

Answer:

no she will be 3 min late

Step-by-step explanation: