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ankoles [38]
3 years ago
7

Suppose a heat exchanger costs $1200 and reduces the heating bill by $200 per year what is the payback time?

Mathematics
1 answer:
natima [27]3 years ago
8 0

6 months is the answer 200×6=1200

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The cake density is 0.454 ounce per cubic inch and the fair price is $0.20 per ounce. What should be a fair price for each cake?
aleksklad [387]

Answer:

price = x * 0.2

or

price = x * 0.454 * 0.2

Step-by-step explanation:

In this case we must know either the mass of the cake or its volume.

Given the case that we know the mass of the cake, it would be:

price = x * 0.2

where x is the mass of the cake in ounces, that is to say if for example a cake has a mass of 10 ounces, it would be:

price = 10 * 0.2 = 2

which means that each cake costs $ 2

Given the case of the volume, we must first multiply the density by this volume in order to calculate the mass and finally the price.

price = x * 0.454 * 0.2

where x is the volume of the cake in cubic inches, if for example the volume is 10 cubic inches it would be:

price = 10 * 0.454 * 0.2 = 0.908

which means that each cake costs $ 0.9

5 0
3 years ago
M N. M<br> (8x+17) <br> (12x-39)
Ulleksa [173]

Answer:

<em>Here </em><em>it </em><em>is </em><em>a </em><em>parallelogram </em><em>so </em><em>opposite </em><em>angles </em><em>of </em><em>parallelogram </em><em>are </em><em>equal</em><em>. </em>

Step-by-step explanation:

<em>so</em>

<em>8x </em><em>+</em><em>1</em><em>7</em><em> </em><em>=</em><em> </em><em>12x </em><em>-</em><em> </em><em>3</em><em>9</em>

<em>1</em><em>7</em><em>+</em><em>3</em><em>9</em><em> </em><em>=</em><em> </em><em>12x </em><em> </em><em>-</em><em> </em><em>8</em><em> </em><em>x</em>

<em>4x </em><em> </em><em>=</em><em> </em><em>5</em><em>6</em>

<em>Therefore </em><em>x </em><em>=</em><em> </em><em>1</em><em>4</em>

3 0
3 years ago
Answer the following
OLEGan [10]

Answer:

What following....

4 0
3 years ago
What is the reason that 2 points always determine a line
Zanzabum

Answer:

Because the line is the shortest path between 2 points

4 0
1 year ago
PLZ HELP QUICKLY! I don't need an explanation just the answer
Phantasy [73]

Answer:

\cos(28)  =  \frac{14}{x}

x =  \frac{14}{ \cos(28) }  = 15.85

x= 15.9

option D

3 0
3 years ago
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