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4 years ago

Solve 3(x - 2) < 18. A{x\x<8) B{x1x > 8) C[xlx<-8} D{xl x>-8)

Mathematics

1 answer:

Evgen [1.6K]4 years ago

8 0

Answer:

A. {x | x < 8}

Step-by-step explanation:

First, we divide both sides by 3.

3(x - 2)/3 < 18/3

Then simplify.

x - 2 < 6

Lastly, add 2 to both sides.

x - 2 + 2 < 6 + 2

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Jessie spent $10 on 3 hair accessories. Which point represents this relationship? On a coordinate plane, a graph titled Jessie's

AlladinOne [14]

Answer:

A. (3, 10)

Step-by-step explanation:

You are told that ...

(x, y) = (number of accessories, dollars)

and you are told that ...

number of accessories = 3

dollars = 10

so the ordered pair is ...

(x, y) = (3, 10) . . . . Point A

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3 years ago

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PLZ HELP WILL GIVE BRAINLIEST!!

velikii [3]

I think the two datas have somewhat similar distribution.

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3 years ago

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if decking cost 3.25 per square feet how much would it cost to build a deck that is 25 feet by 20 feet

Zepler [3.9K]

The cost to build a deck that is 25 feet by 20 feet is 1625

<h3>How to determine the cost?</h3>

The given parameters are:

Cost per square feet = 3.25

Dimensions = 25 feet by 20 feet

The cost to build the deck is calculated as

Cost = Cost per square feet * Product of dimensions

So, we have

Cost = 3.25 * 25 * 20

Evaluate

Cost = 1625

Hence, the cost to build a deck that is 25 feet by 20 feet is 1625

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1 year ago

Inside the box of every cereal box contains a surprise gift. The store manager assures employees that 22 of the 45 boxes on the

kherson [118]

Answer:

0.2333 = 23.33% probability that both of them have the secret decoder ring

Step-by-step explanation:

The cereals are chosen without replacement, which means that the hypergeometric distribution is used to solve this question.

Hypergeometric distribution:

The probability of x successes is given by the following formula:

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

In which:

x is the number of successes.

N is the size of the population.

n is the size of the sample.

k is the total number of desired outcomes.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

45 boxes, which means that $N = 45$

22 have the secret decoder ring, which means that $k = 22$

Two boxes, which means that $n = 2$

What is the probability that both of them have the secret decoder ring?

This is P(X = 2). So

$P(X = x) = h(x,N,n,k) = \frac{C_{k,x}*C_{N-k,n-x}}{C_{N,n}}$

$P(X = 2) = h(2,45,2,22) = \frac{C_{22,2}*C_{23,0}}{C_{45,2}} = 0.2333$

0.2333 = 23.33% probability that both of them have the secret decoder ring

8 0

3 years ago

An entrepreneur is considering the purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the

Bond [772]

Answer:

a. Z-test of a population mean.

Step-by-step explanation:

The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.

This means that we have a large sample, which means that we can consider this to be the standard deviation for the population, which eliminates the t-test, leaving options a and c.

Population mean or proportion?

Mean, as a proportion is a value between 0 and 1, while average revenue may have lots of possible values. So the answer is given by option A.

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3 years ago