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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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What is the value of the underlined digit mark all that apply 0.283 the underlined digit is eight
yawa3891 [41]

Answer:

The underlined digit is 0.08 which is eight hundredths

Step-by-step explanation:

8 hundredths as a decimal is 0.08

.0 is tenths

.00 is hundredths

.000 is thousandths

5 0
3 years ago
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Age of Peter + age of Pol = 39
GalinKa [24]

Answer:

PETER 18

POL 21

MARY 26

Step-by-step explanation:

I dont know if I did in the right way...

1st: Take any number for peter's or pol's age

I took 18 for peter, RANDOMLY

2nd: Subtract the age from the total to get pol's age

39-18=21 Hence, pols age is 21

3rd: Subtract peter's age from the total to get marys age

47-18=26 Hence, Marys age is 26

4th: Add the age of pol and mary

aaand, you get 47

Done!

Hope it helps!!!

6 0
3 years ago
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Evaluate: 2a + 4b when a = 10 & b = 6
Tcecarenko [31]

Answer: Option C: 44

Step-by-step explanation:

so, here we have the equation:

H(a,b) = 2a + 4b

"evaluate" means change the values of the variables for specific values, here we must replace the "a" for 10, and the "b" for a 6.

So we have:

H(10, 6) = 2*10 + 4*6 = 20 + 24 = 44

7 0
3 years ago
*NEED HELP ASAP*<br> What’s the value of X?
-BARSIC- [3]

Answer:

I think that x equals 10 (maybe)


Step-by-step explanation:


5 0
4 years ago
The Wheel Shop sells other kinds of vehicles. There are bicycles and go-carts in a different room of the shop. Each bicycle has
Alisiya [41]

Answer:

15 bikes, 6 gocarts

Step-by-step explanation:

so both the vehicles have 1 seat each

the bicycles will be represented by B

the gocarts will be represented by G

because there are only 1 seat per for a total of 21 seats, we have this as the first equation:

B + G = 21

Gocarts have wheels and bikes have 2 seats, so we have this equation:

2B + 4G = 54

from there we can simply replace b with g to find the amount of gocarts first:

B + G = 21

B = 21 - G

2(21-G) + 4G = 54

42 - 2G + 4G = 54

2G + 42 = 54

2G = 12

G = 6

So there are 6 gocarts.

plug in 6 for g

B + 6 = 21

B = 15

therefore, there are 15 bikes and 6 gocarts

5 0
3 years ago
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