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IgorC [24]
3 years ago
7

Supposed you have been given the task of engineering this product knowing that in your state the cost of electricity is 18 cents

per kilowatt hour and the device would run for approximately 8 hours at a time how much power would the device use if you were given a $5000 budget
Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0

You would have about 3472 Hours

.18\8=1.44 for 8 hour

5000/1.44=3472

Hope this helps :)

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Y = 7/2x + 10 y = -7/2x - 1/10 these lines have perpendicular slopes. True or false?
forsale [732]

Answer: This is False because they don't go together and it doesn't make sense.

Step-by-step explanation:

6 0
3 years ago
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A student simplified the expression 6^2/12^2 as 1/2 do you agree
maria [59]

Answer:

No.

Step-by-step explanation:

6^2=36

12^2=144

36/144 simplified is 1/4

6 0
2 years ago
Please help as soon as possible 50 points
Morgarella [4.7K]

Answer:

the answer is d. 4x²+x-6

Step-by-step explanation:

In order to combine the fractions, they need to have the same denominator.

So, multiply each of their numerators by the denominator they need to be equivalent.

This would look like this:

3x/x+3 --> 3x(x)/x(x+3)        ---simplify this as--> 3x²/x(x+3)

x-2/x  --> (x-2)(x+3)/x(x+3)  ---simplify this as --> x²+x - 6/x(x+3)

3x                    3x(x)                                     x-2                   (x-2)(x+3)

-----      --->        -----                 and             --------   --->           ---------

x+3                   x(x+3)                                    x                        x(x+3)

now that both fractions have the same denominator, we can add their numerators.

3x² + x²+x-6 = 4x²+x -6

This should now look like this:

4x²+x -6

-------------

x(x+3)

8 0
2 years ago
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Given a rectangle with an area of 20 square units, if the width is x units and the length is x + 1 units, what is the difference
ollegr [7]

Answer: 1unit.

Step-by-step explanation:

Area of the rectangle

A = length × width

Since the area = 20 and the width is x and the length is x + 1.

We now substitute for the values in the above formula and solve for x

20 = x × x + 1

20 = x( x + 1 ), we now open

20 = x² + x , then re arrange.

x² + x - 20 = 0, this is a quadratic equation.we solve for x using quadratic means

Here, I am going to solve using factorization by grouping

x² + x - 20 = 0

x² + 5x - 4x - 20 = 0

x( x + 5 ) - 4( x + 5 ) = 0

( x + 5 )( x - 4 ). = 0

Therefore, the solution for x will be

x = -5 or 4, but x can not be -5 ( negative), so x = 4.

Now the difference between width and the length can easily be calculated from the above,

Width = 4 (x) , and length = 5 (4 + 1),

Now difference will be

5 - 4 = 1unit.

5 0
3 years ago
ANSWER QUICK <br> 13+5 3/4
Vaselesa [24]

Answer:

18.75 or 18 3/4

Step-by-step explanation:

4 0
3 years ago
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