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
MrRissso [65]
3 years ago
7

If a kilowatt-hour of energy costs 75 cents, how much does it cost to leave a 40-watt light bulb on for the entire month of May

Mathematics
1 answer:
spin [16.1K]3 years ago
8 0
May has 31 days
31 x 24 = 744 hours in may
744 x 40 = 29760 watt hours
29760 watt hours = 29.76 kwh 
29.76 x 75 = 2232 cents
2232 cents = $22.32
You might be interested in
Name the set(s) of numbers which belong to -1/2 belongs
OLEGan [10]

Answer:

2 rational number because it's negative it can't be natural and cuz it's fraction it can't be whole nor integers

4 0
3 years ago
Read 2 more answers
Winning the jackpot in a particular lottery requires that you select the correct four numbers between 1 and 42 ​and, in a separa
NARA [144]

Answer:

\dfrac{1}{3,357,900}

Step-by-step explanation:

There are

C^{42}_4=\dfrac{42!}{4!(42-4)!}=\dfrac{42!}{4!\cdot 38!}=\dfrac{38!\cdot 39\cdot 40\cdot 41\cdot 42}{2\cdot 3\cdot 4\cdot 38!}=39\cdot 10\cdot 41\cdot 7=111,930

different ways to select the  four numbers between 1 and 42. Only one of this ways is correct (successful to win).

There are 30 different ways select the single number between 1 and 30. Only one of them is correct.

The  probability of winning the jackpot is

\dfrac{1}{111,930}\cdot \dfrac{1}{30}=\dfrac{1}{3,357,900}

4 0
3 years ago
Read 2 more answers
How does the graph of f(x) = |x| compare with the graph of g(x) = −2|x|? Select all that apply.
frez [133]

Answer:A

Step-by-step explanation:

8 0
2 years ago
Find the absolute maximum and absolute minimum for f (x )equals x cubed minus 2 x squared minus 4 x plus 2 on the interval 0 les
sineoko [7]

9514 1404 393

Answer:

  • maximum: 2
  • minimum: -6

Step-by-step explanation:

The extrema will be at the ends of the interval or at a critical point within the interval.

The derivative of the function is ...

  f'(x) = 3x² -4x -4 = (x -2)(3x +2)

It is zero at x=-2/3 and at x=2. Only the latter critical point is in the interval. Since the leading coefficient of this cubic is positive, the right-most critical point is a local minimum. The coordinates of interest in this interval are ...

  f(0) = 2

  f(2) = ((2 -2)(2) -4)(2) +2 = -8 +2 = -6

  f(3) = ((3 -2)(3) -4)(3) +2 = -3 +2 = -1

The absolute maximum on the interval is f(0) = 2.

The absolute minimum on the interval is f(2) = -6.

8 0
2 years ago
What is the answer to the equation 7/9+1/6+3/5
Andrej [43]

Answer:

Step-by-step explanation:

7/9+1/6+3/5

Least common factor is 90

Multiply

70/90+15/90+54/90

Is 139/90 which is. 1 49/90

6 0
3 years ago
Other questions:
  • Sofia is working two summer jobs, making $12 per hour babysitting and making $8 per hour clearing tables. In a given week, she c
    9·1 answer
  • List all of the quadrilaterals with four right angles.
    8·1 answer
  • What step do I do next ?
    11·1 answer
  • R = (–21 -5]
    11·1 answer
  • Which of the following represents 3,280 written in scientific notation?
    10·2 answers
  • Please help?! I don't understand!
    12·1 answer
  • 4x2+3x=0 please solve this by using quadratic formula
    9·1 answer
  • Alyssa bought a dress for $52 and 3 pairs of jeans. She paid a total of $125. Write an equation to represent this word problem
    12·2 answers
  • Find the area of the shaded figure I square units​
    11·1 answer
  • According to​ Charles's law, if the pressure is held​ constant, the volume of a gas varies directly with the temperature measure
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!