1
2 4. 5 4 5
+3 0 7. 3 0 0
——————
3 3 1 8 4 5
line up the decimal points and add.
hope this helps!
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Explanation:
Answer:
4*10^-2
Explanation:
for the scientific notation the first number must be between 1 and 10, so in this case it is 4. 4/100 is also equal to 0.04, and if we could the number of places before 4, there are two, therefore 4 times 10 to the power of -2
Answer:
Efficiency of this process is 30 %.
Explanation:
It is given that,
Electric energy used by the machine, 
The potential energy of the machine is increased, 
The efficiency of this machine is given by :
So, the efficiency of this process is 30 %. Hence, this is the required solution.
