Answer:
When heated calcium carbonate forms calcium oxide and carbon dioxide.
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Exchange : 63m = 6300 cm; 56m21cm= 5621cm
So the lengths of the ribbon will be left is : 6300 - 5621 = 679cm = 6.79 m
Hope it helps! If it is, Brainliest please!
Answer:
Step-by-step explanation:
-2 = 17
You need find what number that need to be in the blank spot
17 + 2 = 19
19 - 2 = 17
In the second question u need to find equal number
17 - 3 = 16 - 2
14 14
They need to be equal - =
19 - 6 = 18 - 5
13 13
Answer:
1, 4, and 5
Step-by-step explanation:
1 is correct because 5*5=25*4=100
2 is incorrect because 5*5=25*5=125
3 is incorrect because 5*4=20*4=80
4 is correct because 5*20=100*1=100
5 is correct because 5*2=10*10=100
6 is incorrect because 5*10=50*10=500
