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3 years ago

Answerrr plzzzzzz ty:)

Mathematics

1 answer:

Angelina_Jolie [31]3 years ago

8 0

Answer:

6,9,12

Step-by-step explanation:

thats the answer they are all multiples of 3, and they are all greater than or equal to 6 and less than or equal to 12

hope this helps x

brainliest plz??

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matrenka [14]

Answer:

a) -8

b) 9

c) -7

Simplify

a) -1

b) 5

c) 3

d) -32

e) 27

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3 years ago

Answer the question below please

DaniilM [7]

The correct answer is : of those planning to not to go on vacation, more of them are women.

The correct answer is (C)

<h3>What is probability?</h3>

Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event

Given: total people asked =145

The first option is not correct because plan to go on vacation women are more than men.

The second option is also incorrect because more women were asked than men.

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The fourth option is incorrect because More men plan to go on vacation.

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2 years ago

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Marina86 [1]

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6 0

3 years ago

F(x) = 4x2 + 5. find the value of f(x) when x = 2 and select the correct answer below. 13

nlexa [21]

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4 0

3 years ago

An electronic system has each of two different types of components in joint operation. Let X and Y denote the lengths of life, i

AURORKA [14]

Answer:

The average cost is $E(C) = 66$

The standard deviation of cost is $\sigma = 9.798$

Step-by-step explanation:

From the question we are told that

$E(X) = 4$

$E(Y) = 2$

$E(X^2) = 24$

$E(Y^2) = 8$

The cost of replacing the two component is C = 50 + 2 X + 4 Y

The variance of X is mathematically represented as

V(X) = $E(X^2) - [E(X)]^2$

Substituting values

$V[X] = 24 - 4^2$

$V[X] =8$

The variance of Y is mathematically represented as

V(Y) = $E(Y^2) - [E(Y)]^2$

Substituting values

$V[Y] = 8 - 2^2$

$V[X] =4$

The average of replacing the two component is

$E(C) = 2 * E(X) + 4* E(Y)$

substituting value

$E(C) = 50 + 2 * (4) + 4* (2)$

$E(C) = 66$

The variance of replacing the two component is

$V(C) = V(50 + 2X +4Y)$ Note: The variance of constant is zero

and X and Y are independent

=> $V(C) = 2^2 * V(X) + 4^2 * V(Y)$

substituting values

=> $V(C) = 4 * 8 + 16 * 4$

=> $V(C) = 32 + 64$

=> $V(C) = 96$

The standard deviation is

$\sigma = \sqrt{V(C)}$

substituting values

$\sigma = \sqrt{96}$

$\sigma = 9.798$

6 0

3 years ago