The relative frequency of the silver cars will be given by:
(number of silver cars recorded)/(number of cars recorded)*100
=17/50*100
=34%
The answer is 34%
-2/5n=-30n
multiply both sides by -1 sinc I don' like negatives
2/5n=30n
multipl yboth sides by 5/2
1n=150/2n
n=75n
this is obviously false, the only number that would work is 0 since 0 =0 times 75
n=0
Zero
you can double check though
-4/3 is the answer to your question
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