Evaluate |–x – 2y| for x = –2 and y = 3. –8 –4 8 4
2 answers:
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Answer: It would be 17 for sure- or 47
Step-by-step explanation:
<em> But i think it's </em><u><em>17</em></u><em> bc/because its says- </em><u><em>Rayan</em></u><em> gives away so does </em><u><em>Gabreille</em></u><em> - So i think it would be </em><u><em>17</em></u><em> bc there saying </em><u><em>take away!</em></u>
Answer:
For a rectangle of length L and width W, the area is:
A = L*W
In this case, we know that;
The length is 18ft more than the width.
L = W + 18ft
The area is 175 ft^2
Then:
A = 175 ft^2
Then we have a system of two equations:
L = W + 18ft
A = L*W = 175 ft^2
To solve this, the first step would be to replace the first equation into the second one:
(18ft + W)*W = 175ft^2
Now we can solve this for W.
18ft*W + W^2 - 175ft^2 = 0.
This is the quadratic equation, i will solve it just to be complete.
We have a quadratic equation, using the Bhaskara formula we can find the two solutions as:
Then the two solutions are:
W = (-18ft - 32ft)/2 = -25ft (This option can be discarded, because a negative width has no sense)
W = (-18ft + 32ft)/2 = 7ft
Then the width is 7ft long, and the lenght will be:
L = W + 18ft = 7ft + 18ft = 25ft