The are of a rectangle is 525 square centimeters. The ratio of the length to the width is 7: 3. Find the length and the width.
1 answer:
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Answer:
46
Step-by-step explanation:
The n th term of an AP is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Here d = - 3 and = - 5 , thus
a₁ + (17 × - 3) = - 5
a₁ - 51 = - 5 ( add 51 to both sides )
a₁ = 46