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BARSIC [14]
3 years ago
14

Select the correct answer.

Mathematics
1 answer:
lawyer [7]3 years ago
3 0
I bet the equation is x²+4x-21=0
factorise
(x+7)(x-3)=0
x+7=0 , x-3=0
x=-7, x=3
the answer is C
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Baileys rectangular dog pen for his Irish setter must have an area of 300 square feet. Also, the length must be 10 feet longer t
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Area of rectangle = length × width
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300 = 10x + x^2
Now we have the equation y=x^2 + 10x - 300
We can factor this equation to get our zeroes, which are:
-5(1+sqrt(13)),
5(sqrt(13)-1)

We only use the positive zero because we can't have a negative dimension.

Your width would be:
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Your length would be:
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nikdorinn [45]
The answer is yes
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Answer:

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Sloan [31]
Given that <span>p represents "The shape is a rhombus", q represents "The diagonals are perpendicular", and r represents "The sides are congruent".

"if and only if" is represented using the biconditional logic operator (↔) and "and" is represented using the logical conjuction operator (∧).

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</span>
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