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ankoles [38]
2 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]2 years ago
8 0

6 months is the answer 200×6=1200

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Ludmilka [50]

Answer:

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Step-by-step explanation:

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3 years ago
Read 2 more answers
URGENT!!! Write the product as a sum or difference.
CaHeK987 [17]

Answer:

3 sin(41t) - 3 sin(t)

Step-by-step explanation:

The general formula to convert the product of the form cos(a)sin(b) into sum is:

cos(a) sin(b) = 0.5 [ sin(a+b) - sin (a-b) ]

The given product is:

6 cos(21t) sin(20t) = 6 [ cos(21t) sin(20t) ]

Comparing the given product with general product mentioned above, we get:

a = 21t and b = 20t

Using these values in the formula we get:

6 cos(21t) sin(20t) = 6 x 0.5 [ sin(21t+20t) - sin(21t-20t)]

= 3 [sin(41t) - sin(t)]

= 3 sin(41t) - 3 sin(t)

Therefore, second option gives the correct answer

4 0
3 years ago
a metal strip is being installed around a workbench that is 6 feet long and 2 feet wide. find how much stripping is needed
Stolb23 [73]
Given that the metal strip is being installed around a bench that 6ft long 2ft wide. The metal required will be given by:
P=4(L+W)
=4(6+2)
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Therefore we conclude that we need a metal strip that is 32ft long
4 0
3 years ago
Solve for m.<br><br> m+14&lt;−1 2/5
sergejj [24]

Step-by-step explanation:

Hey where you went give me your mail id

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