After swimming to a depth of 55 feet below the surface of
1 answer:
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<span>an = 4 + (n - 1)(7)
a1 = 4 + (1-1)*7 = 4
a2 = 4 + (2-1)*7 = 4 + <em>7
</em>
</span>
<span>
7 is common difference of arithmetic sequence.
</span>
a1 = 4 + (1-1)*7 = 4
a2 = 4 + (2-1)*7 = 4 + <em>7
</em>
</span>
<span>
7 is common difference of arithmetic sequence.
</span>
Answer: Width is 7 inches, length is 15 inches.
Step-by-step explanation:
Let the width be w. Then, the length is w+8.