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ladessa [460]
3 years ago
13

A light bulb consumes 2400 watt-hours per day. How long does it take to consume 13800 watt-hours?

Mathematics
2 answers:
Anni [7]3 years ago
8 0
Very simple. Just divide 13800 by 2400. Your answer will be 5.75 hours
or 5 hours 45 minutes.
olga55 [171]3 years ago
4 0
It will take about 5.75 days. basicly 5 days and 18 hours.
divide hours by total, and then find out 75 percent of 24
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George is solving the equation below by finding successive approximations. He started from a graph where he found the solution t
skelet666 [1.2K]

The mistake made by George is; D:George should have averaged the two differences instead of the two bounds.

<h3>How to Solve Successive Approximations?</h3>

In Mathematics, successive approximation can be defined as a classical method that is used in Calculus for solving integral equations or initial value problems.

In this question, George started the first iteration of successive approximation by using the lower and upper bounds of the graph. However, we can deduce that George made a mistake instep 5 because he should have used x = 3/2 as the new upper bound.

Read more about Successive Approximations at; brainly.com/question/25219621

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6 0
2 years ago
An isotope decays at a rate of -0.0049% per year. Find the half life. (show the work)
cricket20 [7]

Answer:

  14,146 years

Step-by-step explanation:

The annual multiplier is (1 -0.0049%) = 0.999951. We want to find the number of times this needs to be multiplied to make the product 1/2.

  0.5 = 0.999951^t

  log(0.5) = t·log(0.999951)

  log(0.5)/log(0.999951) = t ≈ 14,145.514

The half-life is about 14,146 years.

7 0
3 years ago
The formula to find the area of the walls of a rectangular room is A=2h (l+b), h is wall height, l is room length, and b is room
Allisa [31]
Problems are very often written in a confusing way. This one couldn't possibly have been
written any more clearly.  Sooner or later, you have to stop telling yourself that you have
no clue, settle down, and carefully read the words that are right there on the page.

I'll tell you one more detail that's not in the problem:  "breadth" means "width".
 
Now.  The problem clearly tells you all of these things, in this exact order:

=>  Area of the walls = (2 x height) x (length + width)

=>  length = 8m
=>  width = 6m
=>  height = 2.5m 

Is there a reason you can't take the numbers for length, width, and height,
and write them in the formula for the area ?  Do I have to do all the work ?

Area = (2 x height) x (length + width)

Area = (2 x 2.5m ) x ( 8m    +   6m  )

Do the arithmetic inside the parentheses:

Area = (    5m     ) x (     14m          )

Do the multiplication:

Area = <u>70 m² .</u>

You will never see a problem that comes any closer to answering itself <em>for </em>you.
8 0
3 years ago
Simplify: -6(<br> 5<br> 3<br> x + 4)
Free_Kalibri [48]

Answer X = 2

Step-by-step explanation:

-30 + -18 - X + - 24,

+ 30                    +30

0                           6

-18 -x = -6

DIVIDE

3 -x = -1

BRING THE 3 OVER TO THE NEGATIVE ONE

YOU GET

X = 2

4 0
3 years ago
How do relational databases work mathematically?
Dmitrij [34]

Answer:

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3 0
3 years ago
Read 2 more answers
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