Hey there! :D
Since 50% is half of 100%, it would also be half of 42.
42/2 <== that can be used to determine 50%
42/2= 21
50% of 42 is 21.
You could also use this:
42*.5= 21 <== this also works
I hope this helps!
~kaikers
Answer:

Step-by-step explanation:

Now taking 3x to right hand side of the eqn . & +1 to the left side eqn. , sign of 3x changes to -3x & +1 changes to -1 .

Now solving this , we get the value of x.

Answer:
e
Step-by-step explanation:
50 and 40
<span>square root of 81 = 9 so it is rational number
5 divided by 3.14 = 5/3.14 = 500/314 so it is rational as well.
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