out of 30 questions on the maths test tomi knew the answer to 27 of them what percentage of questions did tomi know the answer f
1 answer:
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Let the total ribbon Zoe had was x feet.
Out of x feet, she used 3/8 part of it.
Hence,
3/8 part of the original ribbon is equal to 9 feet.
Hence, we get
=> Multiply 8 on both sides.
Divide both sides by 3
Zoe had 24 feet of ribbon in starting... Answer
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
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