OK. I did it, and I have the solution.
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The length of the deck is (5 + 2x) .
The width of the deck is (4 + 2x) .
If the deck didn't have that big hole in the middle where the pool is,
then its area would be
(5 + 2x) · (4 + 2x) .
When you multiply that all out, you get Area = 4x² + 18x + 20
and the question tells us that the area of the whole big rectangle is 90 yds² .
So we can write
4x² + 18x + 20 = 90 .
Subtract 90 from each side: 4x² + 18x - 70 = 0
Divide each side by 2 : 2x² + 9x - 35 = 0
You can use the quadratic equation to solve that and find out that
x = 2.5 yards, and that's what the question is asking you.
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That makes the deck 10 yds high and 9 yds wide.
Total area of the whole big rectangle, (deck + pool ), = 90 yds².
Question
All numbers greater than 10 and less than 1000 ?
Answer:
from 11 to 999
Answer:
$2.25 per movie
Step-by-step explanation:
3(4)= $12
$12-$3= $9
$9/4= $2.25
The answer would be 22.
You would use the order of operations to solve this problem,
First you do the parenthesis, there are none so you skip this
Then the exponents, none so skip it
Then you do multiplication and division from left to right
5•7 is 35, 3•8 is 24
So the problem is now
35-24+11
After multiplication comes addition and subtraction from left to right
35-24 is 11
11+11 = 22
So the answer to (5x7)-(3x8)+11 is 22
