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Anastasy [175]
3 years ago
14

Mnhbkbnkjnjnnjknjnnkjn jnkjnjnkj m

Mathematics
2 answers:
nlexa [21]3 years ago
6 0
What does this mean? Do you have a question or are you good?
Gwar [14]3 years ago
4 0

Answer:

thx 4 the points

Step-by-step explanation:

:)..........?.

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Victoria recently switched to a new electric company. If she uses between 0 and 400 kilowatt-hours (kWh) of electricity per mont
Gekata [30.6K]

Answer:

see the explanation

Step-by-step explanation:

<em><u>The question is </u></em>

Identify the domain and the range, using words and inequalities

Let

x -----> the number of kilowatt-hours (kWh) of electricity per month

y ----> the price per month

we know that

Part 1) For the value of x between 0 kWh and 400 kWh

0\ kWh \leq x < 400\ kWh

The price is equal to

y=\$30

therefore

The domain is the interval ------> [0,400)

The domain is all real numbers greater than or equal to 0 kWh  and less than 400 kWh

The range is ($30)

The range is equal to $30

Part 2) For the value of x equal to 400 kWh or more per month

x\geq 400\ kWh

The domain is the interval -----> [400, infinite)

The domain is all real numbers greater than or equal to 400 kWh

The price is

y=0.097x

<em>Find the range</em>

For x=400 kWh

y=0.097(400)=\$38.8

so

y\geq \$38.8

The range is the interval -----> [38.8, infinite)

7 0
3 years ago
1. Find the value of x. *
oksano4ka [1.4K]
Forgive me if I’m wrong. 25?
4 0
3 years ago
Read 2 more answers
A score that is three standard deviations above the mean would have a z score of
tia_tia [17]

The value of z-score for a score that is three standard deviations above the mean is 3.

In this question,

A z-score measures exactly how many standard deviations a data point is above or below the mean. It allows us to calculate the probability of a score occurring within our normal distribution and enables us to compare two scores that are from different normal distributions.

Let x be the score

let μ be the mean and

let σ be the standard deviations

Now, x =  μ + 3σ

The formula of z-score is

z_{score} = \frac{x-\mu}{\sigma}

⇒ z_{score} = \frac{\mu + 3\sigma -\mu}{\sigma}

⇒ z_{score} = \frac{ 3\sigma }{\sigma}

⇒ z_{score} = 3

Hence we can conclude that the value of z-score for a score that is three standard deviations above the mean is 3.

Learn more about z-score here

brainly.com/question/13448290

#SPJ4

6 0
2 years ago
What are the main properties of a rectangle <br> Use rectangle (BCDE) to help you .
OleMash [197]

Answer:

it must be number 1

I am sure about parallel side and 4 right angles

6 0
3 years ago
PLEASE HELPP!!
likoan [24]

Answer:

A: s=75w

B: s= 75(16)

s=1200

Step-by-step explanation:

6 0
3 years ago
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