Các bạn giúp mình giải bài này đi. Cảm ơn các...
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Các bạn giúp mình giải bài này đi mình xin cảm ơn
30 tháng 6 2016
a) \(\sqrt{169}=13\) và \(\sqrt{196}=14\)
bài 3 :
a) \(A=\frac{\sqrt{72}}{\sqrt{2}}+2\frac{\sqrt{27}}{\sqrt{3}}-3\frac{\sqrt{28}}{\sqrt{63}}=\frac{22}{3}\)tương tự
NT
0
HN
0
SM
3
TP
22 tháng 5 2022
She thanks me for inviting her to the party.
Why's Mr.Grim sitting in a boat and fishing?
Do your classmates do their homework in the library?
Kate is going to tell her younger sister about her trip to Japan.
My sister loves taking care of small animals.
22 tháng 5 2022
She thanks me for inviting her to the party.
Why's Mr. Grim interested in sitting in a boat and fishing?
Do your classmates do their homework in the library?
Kate is going to tell her younger sister about her trip to Japan
My sister loves taking care of small animals
SM
1
SM
4
SM
3
SM
1
M
0
NK
1
NB
5 tháng 5 2023
I
1.What type of energy do you use at home?
2.John uses low energy light bulbs to save electricity.
3.Mai can't go to the cinema at present because she is studying for her exam.
4.What book are you currently reading?
5.She is not swimming in the swimming pool at the moment.
6.Scientists are looking for a new energy source to replace coal now
II.
1. Coal is more expensive and more polluting than natural gas.
2. We are looking for cheap and clean and effective sourced of energy..
3.. You should switch off electrical appliances when they aren’t in use.
4. Despite being the most polluting of fossil fuels, coal is still the largest sources of energy worldwide.
5. People will use biogas for fuel in homes and for transport