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marishachu [46]
3 years ago
12

The cost of installing an electric heating system for a 3- bedroom home is $5000 and the operating cost is $1,100 per year. A so

lar heating system costs $29,700 to install but only $150 per year to operate. After how many years will total costs for the two systems be the same? What will the cost be?
Mathematics
1 answer:
Lana71 [14]3 years ago
3 0

Answer:22

Step-by-step explanation:

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Determine dois números ímpares consecutivo cujo produto seja 195
miv72 [106K]
Let 1st integer  = xLet 2nd integer = x + 1 We set up an equation. x(x + 1) = 195 x2 + x = 195 x2 + x - 195 = 0

We will use the quadratic formula: x = (-b ± √(b2 - 4ac) / (2a) x = (-1 ± √(1 - 4(-195))) / 2 x = (-1 ± √(781)) / 2 x = (-1 ± 27.95) / 2 x = 13.48x = -14.78 
<span>We determine which value of x when substituted gives us a product of 195.</span> 13.48(14.48) = 195.19-14.48(-13.48) = 195.19 <span>The solution is 2 sets of two consecutive number</span> <span>Set 1</span> The 1st consecutive integer is 13.48The 2nd consecutive integer is 14.48 
<span>Set 2</span> The 1st consecutive integer is -14.48The 2nd consecutive integer is -13.48Hopefully this helped, hard work lol :)
8 0
3 years ago
Which number is rational? 2 square root, pi ,10 square root ,16 squeare root
ki77a [65]

Answer:

Square root of 16 is rational beacuse Square root of 16=4 Whlie the others are Irational.

Step-by-step explanation:

7 0
2 years ago
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A jewelry store is having a 50% off sale for all necklaces. During this sale, what is the cost of a necklace that regulary costs
Ymorist [56]
50% off means half price, so half of 49.98 is 24.99
the necklace now costs 24.99 dollars
3 0
2 years ago
PLEASE MATH HELP WILL GIVE BRAINLIEST
hram777 [196]
The answer  is 32.72 degree.
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7 0
2 years ago
Help I don’t know the answer I have tried solving this all kinds of different ways and it’s still wrong!
gogolik [260]

Answer:

24

Step-by-step explanation:

I think it's 24 I don't knowI say I think

7 0
2 years ago
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