There are 128 students going on a field trip. If each bus held 30 students, how many buses are needed?
1 answer:
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Answer:
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
The sum of 18 terms is 792.
<h3>What is an Arithmetic Sequence ?</h3>An arithmetic sequence is defined as the sequence of numbers in which the difference between two consecutive terms is same.
First Term is 10
Common Difference = 4
The partial sum of the arithmetic sequence is given by
Here a is the first term , d is the common difference
Therefore the sum of 18 terms is 792.
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Step-by-step explanation:
Given that,
- Length of the one portion of the board = x feet
- Length of the another portion = (7x – 9) feet
According to the question,
Total length = Sum of the length of the two pieces
Total length = {x + (7x – 9)} feet
Total length = {x + 7x – 9} feet
<u>Total length = (8x – 9) feet</u>
Therefore, the total length of the board as a simplified expression in x is (8x – 9) feet.