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
Find the numerator of the equivalent fraction with the denominator 12x - 2/3
Arada [10]
The numerator should be 8x
8 0
3 years ago
Which is more, 1 ton or 388 pounds?
Pavlova-9 [17]
1 ton = 2,000 pounds, so 1 ton would of course weigh more than 388 pounds
7 0
3 years ago
Read 2 more answers
HELP ME OUT PLS!!!!!!​
Citrus2011 [14]

Answer:

The measure of angle 7 is 34 degrees.

Step-by-step explanation:

Since a || b, angles 3 and 7 are corresponding angles which are congruent. Therefore, since the measure of angle 3 is 34 degrees, the measure of angle 7 is 34 degrees.

5 0
2 years ago
Michael is constructing a circle circumscribed about a triangle. he has partially completed the construction. what should be his
earnstyle [38]

Answer:

Connect the arcs to make a perpendicular bisector

6 0
1 year ago
Please answer right away
Andreas93 [3]

Answer:

20 miles with an error margin of  ± 8 miles

Step-by-step explanation:

The margin of error of a result is the range in which an error can vary. To find the margin of error between both distances we have to

28-12 = 16, that is, the variation of the result has a range of 16 miles. So we will look for the midpoint of both distances

(X2-X1)/2+X1=(28-12)/2+12=16/2+12=8+12=20

So from this midpoint the value can vary between 8 points below and 8 points above that would cover the difference of 16 miles that we observed at the beginning

In this way, the correct answer is 20 miles with an error margin of  ± 8 miles

Done

8 0
3 years ago
Other questions:
  • What is the area of this parallelogram? ___ sq in
    13·2 answers
  • 4 out of 12 family rides are for young riders under the age of 5. What fraction has the same value as 4/12? 1/2 1/3 1/4 1/5 1/6
    11·2 answers
  • Solve log2 ( x - 1 ) + log2 ( x + 1 ) = 3<br><br> check answers are in domain
    7·1 answer
  • Simplify by combining like terms: 3x + 3x + 3x
    14·2 answers
  • Find the y-intercept of the line whose equation is 3x - 4y = -2.
    8·2 answers
  • Ten is at least the product of a number h and 5
    6·2 answers
  • How do you do this?
    11·1 answer
  • Could someone help me pls
    14·1 answer
  • Seriously guys, I'm so confused! Please help! I will give brainliest to whoever gives the best answer! Thank you!
    12·1 answer
  • PLEASE HELP SOON<br><br> What is the value of x?<br><br> Enter your answer in the box.<br><br> x =
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!