1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
lions [1.4K]
3 years ago
11

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

h, the cost is a set price of $30. If she uses 400 kWh or more per month, the price is $0.097 per kWh.
Mathematics
1 answer:
Gekata [30.6K]3 years ago
7 0

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)

You might be interested in
What is yhe area of thr hexagon? 5cm, 8cm and 9.28 cm
xeze [42]

Answer:

2 meters

long long long long

8 0
3 years ago
Which two numbers multiply to -52 and add to 24?
Shtirlitz [24]

Answer: -2 and 26

Step-by-step explanation:

-2 * 26 = -52

-2 + 26 = 24

5 0
3 years ago
Read 2 more answers
Find the measure of the angle indicated (x). Round to the nearest tenth Show your work to support your answer
JulijaS [17]

Answer:

Karen,  this type of question is such a tricky question, there is a lot of things that you just have to remember for these.  Also, this type of question is asked a lot on brainly,  you are in good company :P   This also makes me wonder if math teachers are just REALLY BAD at teaching this.. hmmm   Something is up with this type of problem b/c I have answer 100s of these type on here.. they are tricky.  soooo...

Step-by-step explanation:

1st ,

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

with the above info,  we can solve your triangle  :P  not meant to sound "wrong"  .. anyway

look for the info you are given and what you want to find... and match that to one of the 3 formulas.  after  you've done this a few 100 times.. you'll just remember the above formulas.  :D

sooo I see that we want to find that angle ∅ and we know two of the sides and that this is a right triangle.. which means we can use the above formulas on this triangle.  So we know the adjacent side and the opposite side, to the angle,  soo lets use TOA

Tan(∅) = Opp / Adj

Tan(∅) = 4 / 13

now the algebra gets a little tricky here.. but it's just using the inverse function of the Tan to find the angle .. it's just going  backwards with the function is all.. nothing to see here... move along.. :D

take the inverse Tan function ( arcTan)  on both sides... sooo

∅ = arcTan( 4 /13 )      ( this will find the angle, but make sure your calculator is set to degrees.. and not radians )

∅ = 17.1027...°

So, now we know that angle ∅

SOH CAH TOA is super helpful for this kind of triangle problem :)

7 0
2 years ago
Can someone pls help me???
Fudgin [204]

Answer: its the one under the first one i think good luck adriana lol

Step-by-step explanation:

7 0
3 years ago
Solve inequality and graph solution
stellarik [79]

Answer:

ill give you this math app that will give u answers

Step-by-step explanation:

https://www.cymath.com/answer?q=1%2B1 there u go

4 0
3 years ago
Other questions:
  • Jill earns 1.5 times her normal hourly rate for each hour she works after 40 hours in a week. she worked 52 hours this week and
    9·2 answers
  • Kims age was twice that of her sister. When you add Kim's age to her sisters age you, you get 36. How old is each sister?
    12·1 answer
  • (11x - 1.8) - (15x + 6.6) = 11x - 1.8 - 15x + 6.6 = - 4x + 4.8​
    5·1 answer
  • Find the value of x in the picture below. (round to nearest tenth if needed) THANK YOU FOR HELPING ME:)
    12·1 answer
  • Which expression below is equivalent to 10?<br> 06+1 + 3<br> 012-3<br> O 5+3+1<br> 015-2-1
    6·1 answer
  • Pleaseeeeee helpppppppppp
    12·2 answers
  • Stan evaluated a function with a value and got 3 as the result. He wrote the entire process as a sentence: The function , when e
    13·1 answer
  • Somebody help me plz!! It’s due tomorrow
    9·1 answer
  • Help please<br> :)))) ))))))))
    7·1 answer
  • One angle of a triangle measures 65°. The other two angles are in a ratio of 3:20. What are the measures of those two angles?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!