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
Alborosie
2 years ago
7

The charge for electricity consumption E is partly constant and partly varies as the number N of units used. The charge for 82 u

nits is N 3,655 while the charge for 42 units is N 2055:
a) calculate the charge per unit of electricity
b) obtain a formula for E in terms of N​
Mathematics
1 answer:
balandron [24]2 years ago
3 0

The charge per unit of electricity is #415

The formula for E in terms of N is E = 375 + 40N

<h3>What is variation?</h3>

Variation is a mathematical term that establishes the relationship between quantities and variables in an equation.

Analysis:

E = K + CN

where K and C are constants

When E = 3655, N = 82 and when E = 2055, N = 42

3655 = K + 82C ---------------1

2055 = K + 42C----------------2

subtract equation 2 from 1

40C = 1600

C = 40

substitute C in equation 1

3655 = K + 82(40)

3655 = K + 3280

K = 3655 - 3280 = 375

charge per unit is N = 1

E = 375 + 40(1) = #415

Formula for E in terms of N is E = 375 + 40N

In conclusion, the charge per unit of electricity is 415 and the equation connecting E and N is E = 375 + 40N

Learn more about Variation: brainly.com/question/6499629

SPJ1

You might be interested in
Which of the following describes the graph of a linear function?
sveticcg [70]
I believe that the last one is correct because it is not a curve but a straight line, and it can't be the second one because the y value does not decrease as x increases
3 0
3 years ago
Which of the following sets of numbers could represent the three sides of a
Alchen [17]

Answer:

im not sure if this is correct but, i got C

5 0
2 years ago
Find all possible values of k so that x^2 + kx - 32 can be factored.
daser333 [38]

Answer:

Step-by-step explanation:

The posssible factors are

x^2 + 4x - 32

(x+8)(x-4)

x^2+ 14x - 32

(x+16)(x-2)

(x+32)(x-1)

x^2+31x-32

8 0
3 years ago
Stephan added 26 new contacts to his phone list. He had to delete 16 old contacts before he could add any more. Stefan now has a
bezimeni [28]

Answer: 26-16= c

c=10

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Jane cuts a foam block along the red line. When she looks at the newly
alexira [117]
I believe the answer is A
4 0
3 years ago
Other questions:
  • A jar of marbles contains 7 blue marbles, 12 yellow marbles, 8 green marbles, and 5 red marbles. Use this information to answer
    7·1 answer
  • Graph the equation below by plotting the y-intercept and a second point on the line.<br> Y=3x-3
    10·1 answer
  • These lines are perpendicular. Is this statement true or false?
    6·1 answer
  • What is the rate and unit rate for 5pencils for 11 dollars?
    13·1 answer
  • A sample space consists of five simple events, E1, E2, E3, E4, and E5. a If P(E1) = P(E2) = 0.15, P(E3) = 0.4, and P(E4) = 2P(E5
    11·1 answer
  • HURRY PLEASE!!!!! Triangle RST is translated 2 units left and then reflected over the y-axis.
    10·2 answers
  • Two planes, which are 2820 miles apart, fly toward each other. Their speeds differ by 55 mph. If they pass each other in 4 hours
    9·1 answer
  • The length of the garden is 10 feet more than twice its width. The perimeter of the garden is 170 feet.
    10·1 answer
  • Tyler's mom purchased a savings bond for Tyler. One year after it was purchased, the value of the savings bond was $156. If the
    11·1 answer
  • To increase sales, an online clothing store began giving a 50% off coupon to random customers. Customers didn't know whether the
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!