mrs peters bought 7 1/2 yards of fabric she needs another 4 7/8 yards how many yards of fabric does she need altogether
1 answer:
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Answer:
425.25
Step-by-step explanation:
Since we are given 36th term as 14 and we know common difference is , it means that from the first term, we add
to each and get 14 on the 36th term. To figure out the first term, thus, we have to subtract
35 times from 14. Let's do it to get first term:
The sum of arithmetic sequence formula is:
Where,
is the sum of nth term (we want to figure this out for first 36 terms)
is the first term (we figured this out to be 9.625)
is the term number (36 for our case)
is the common difference (given as
)
Substituting all the values, we get:
First answer choice is right.
So firstly, foil 3(4g + 6) and 2 (6g + 9):
Now since the quantity is the same on both sides of this equation, this means that <u>this equation has infinite solutions.</u>