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3 years ago

Use distributive property to rewrite 5 (x+4)

Mathematics

2 answers:

Eduardwww [97]3 years ago

4 0

The answer should be 5x+20

Serggg [28]3 years ago

3 0

The answer is 5x + 20.

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What is the solution of the following? * -4 = 16 Infinite solutions no solution

rjkz [21]

Answer: no solution

Hope this helps and good luck :)

Step-by-step explanation:

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3 years ago

A particular sale involves four items randomly selected from a large lot that is known to contain 9% defectives. Let X denote th

umka2103 [35]

Answer:

The expected repair cost is $3.73.

Step-by-step explanation:

The random variable X is defined as the number of defectives among the 4 items sold.

The probability of a large lot of items containing defectives is, p = 0.09.

An item is defective irrespective of the others.

The random variable X follows a Binomial distribution with parameters n = 9 and p = 0.09.

The repair cost of the item is given by:

$C=3X^{2}+X+2$

Compute the expected cost of repair as follows:

$E(C)=E(3X^{2}+X+2)$

$=3E(X^{2})+E(X)+2$

Compute the expected value of X as follows:

$E(X)=np$

$=4\times 0.09\\=0.36$

The expected value of X is 0.36.

Compute the variance of X as follows:

$V(X)=np(1-p)$

$=4\times 0.09\times 0.91\\=0.3276\\$

The variance of X is 0.3276.

The variance can also be computed using the formula:

$V(X)=E(Y^{2})-(E(Y))^{2}$

Then the formula of $E(Y^{2})$ is:

$E(Y^{2})=V(X)+(E(Y))^{2}$

Compute the value of $E(Y^{2})$ as follows:

$E(Y^{2})=V(X)+(E(Y))^{2}$

$=0.3276+(0.36)^{2}\\=0.4572$

The expected repair cost is:

$E(C)=3E(X^{2})+E(X)+2$

$=(3\times 0.4572)+0.36+2\\=3.7316\\\approx 3.73$

Thus, the expected repair cost is $3.73.

4 0

3 years ago

I need help plssssssssss

lesya [120]

Answer:

267.95 in³

Step-by-step explanation:

volume = 4/3 × 3.14 × 4³

= 4/3 × 3.14 × 64

= 267.95 in³

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3 years ago

How to write a solution to the equation x^2=5 using exponents and radicals

maksim [4K]

Answer:

x = sqrroot(5)

Step-by-step explanation:

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3 years ago

Three marbles, one red (R), one yellow (Y), and one blue (B), are placed in a bag. A fair coin is flipped, and then a marble is

Dafna1 [17]

Answer:

Step-by-step explanation:

There are 6 possible out comes

The coin can be either heads or tails

The marble can be either red yellow or blue

Outcomes

Heads Red Heads yellow Heads Blue

Tails Red Tails yellow Tails Blue

4 0

3 years ago

Read 2 more answers