Beatrice has a rectangular swimming pool in her backyard. The dimensions are 16 feet by 8 feet. She decides to build a deck of u
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width around the pool. Together the pool and the deck will have an area of 384 square feet.
a) write the expression to represent the length and the width of the swimming pool with the deck around it
b) find x, the width of the deck
width around the pool. Together the pool and the deck will have an area of 384 square feet.
a) write the expression to represent the length and the width of the swimming pool with the deck around it
b) find x, the width of the deck
1 answer:
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The answer is: the average height is 
, the median height is r-2.
r - Ray's height
l - Lin's height
s - Sam's height
<span>Ray is 2 inch taller than Lin: r = l + 2 </span>⇒ l = r - 2
Ray is 3 inch taller than Sam: r = s + 3 ⇒ s = r - 3<span>
</span><span>The average is the sum of all values divided by the number of values:
</span>
<span>
Since </span>l = r - 2 and s = r - 3, then:
<span>The median means the middle value. Let's first rearrange values so we can find the middle one:
</span>Ray is taller than Lin and Sam, so Ray is the tallest.
Sam is much shorter than Ray comparing to Lin, so Sam is the shortest.
Therefore, values are from the lowest to the highest:
(s, l, r)
⇒ (r-3, r-2, r)
Median of these values is in the middle, so the median height is r-2.
r - Ray's height
l - Lin's height
s - Sam's height
<span>Ray is 2 inch taller than Lin: r = l + 2 </span>⇒ l = r - 2
Ray is 3 inch taller than Sam: r = s + 3 ⇒ s = r - 3<span>
</span><span>The average is the sum of all values divided by the number of values:
</span>
Since </span>l = r - 2 and s = r - 3, then:
<span>The median means the middle value. Let's first rearrange values so we can find the middle one:
</span>Ray is taller than Lin and Sam, so Ray is the tallest.
Sam is much shorter than Ray comparing to Lin, so Sam is the shortest.
Therefore, values are from the lowest to the highest:
(s, l, r)
⇒ (r-3, r-2, r)
Median of these values is in the middle, so the median height is r-2.