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Nana76 [90]
2 years ago
13

A light bulb consumes 3600 watts- hours per day. How many watt - hours does it consume in 5 days and 6 hours?

Mathematics
2 answers:
maksim [4K]2 years ago
7 0

Answer:

18,900 watt-hours for 5 days and 6 hours of use

Serjik [45]2 years ago
5 0

Answer:

13500/3600= 3 days and 3/4 of a day

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My pigg y bank has only pennies and nicklels in it , and 2/7 of the coins are nickel If i remove 84 pennies then 1/3 of the reme
zubka84 [21]

Answer:

There are 105 pennies in the piggy bank.

There are 42 nickels in the piggy bank.

Step-by-step explanation:

there are:

p pennies in the piggy bank

n nickels in the piggy bank

Then we can define T, the total number of coins, as:

T = p + n

We know that 2/7 of the total number of coins are nickels.

This can be written as:

n = (2/7)*T = (2/7)*(n + p)

And if we remove 84 pennies, 1/3 of the remaining coins are pennies.

This can be written as:

p - 84 = (1/3)*(n + p - 84)

Then we have a system of two equations:

n = (2/7)*(n + p)

p - 84 = (1/3)*(n + p - 84)

Let's solve the system, to do it, we first need to isolate one of the variables in one of the equations.

We can isolate n in the first one, to get:

n = (2/7)*(n + p) = (2/7)*n + (2/7)*p

n - (2/7)*n = (2/7)*p

n*(5/7) = (2/7)*p

n = (7/5)*(2/7)*p = (2/5)*p

n = (2/5)*p

Now we can replace this in the other equation:

p - 84 = (1/3)*(n + p - 84)

p - 84 = (1/3)*( (2/5)*p + p - 84)

Let's solve this for p

p - 84 = (1/3)*( (7/5)*p - 84)

3*(p - 84) = (7/5)*p - 84

3p - 252 = (7/5)*p - 84

3*p - (7/5)*p = 252 - 84

(15/5)*p - (7/5)*p = 168

(8/5)*p = 168

p = (5/8)*168 = 105

There are 105 pennies in the piggy bank.

And we know that:

n = (2/5)*p = (2/5)*105 = 42

There are 42 nickels in the piggy bank.

4 0
3 years ago
6/7k=6 i really need help
crimeas [40]
So k=1000 like 4k=4 000 so 6/7 of a thousnad =0.857142857 so times 6=0.857142857
4 0
2 years ago
Read 2 more answers
The ratio of the length to the width of a picture is 5:2. The picture is enlarged so that its length is 15 inches now. What is t
Maru [420]
The answer is B.
The ratio is multiplied by three so 5 times 3 is 15 and 2 times 3 is 6.
8 0
3 years ago
Which ones have been translated ?thank you
WITCHER [35]

Answer:

looks like D! Have a nice day :D

7 0
2 years ago
Which word or phrase that best describes the probability??
Llana [10]
100% = Certain (no matter what.. it's going to happen)
75/100 = Likely (has a high chance of happening)
5/10 = Equally likely (can happen, or might not)
1/4 = Unlikely (might not happen)
0.0 = Impossible 

hope this helps
5 0
3 years ago
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