Step-by-step explanation:
The washer costs $624 and the dryer costs 312.
624 is double 312 so that works out. Also if you add 624 and 312 you get 936.
The sum of the first five terms is 11/2
<h3>How to determine the sum?</h3>
The series is given as:
1/2, -1,2,-4…
Calculate the common ratio of the series using
r = -4/2
Evaluate
r = -2
The sum is then calculated as:

This gives

Evaluate

Evaluate

Hence, the sum of the first five terms is 11/2
Read more about series at:
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Answer:
Step-by-step explanation:
cost price x .60 = 80
80/.60 = 133.33 was the cost price
Answer:
rational
Step-by-step explanation:
its decimal expansion terminates after 9 and it can also be represented as fraction.