![subject](/tpl/images/cats/mat.png)
Mathematics, 27.01.2020 18:31 chey1603
Burning coal yields about 30 x 106 joules of energy per kilogram of coal burned, but only 30% of that energy goed into electricity. how many 100 watt light bulbs can be lit for one hour using 1 kilogram of coal?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 14:40
1. what is the phythaforean theorem? 2.what do we use it for? 1.what is the distance formula ? 2.what do we use it for?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:10
What is the absolute value of the complex number -4-sqrt2i
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
At the electronics store you have a coupon for 20% off up to 2 cds you buy for cds with the original cost of $10.99 each the sales tax is 5% what is the total cost of your purchase
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
Burning coal yields about 30 x 106 joules of energy per kilogram of coal burned, but only 30% of tha...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mir.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/en.png)
English, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
Mathematics, 07.12.2020 16:30
![question](/tpl/images/cats/en.png)
English, 07.12.2020 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/User.png)