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ollegr [7]
2 years ago
5

IM GIVING BRAINLIEST!!PLEASE HELP!!

Mathematics
1 answer:
melomori [17]2 years ago
8 0

Answer:

D

Step-by-step explanation:

(x - 3)(x + 4) = x^2 + x - 12

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The answers is what I got but it said it was wrong. can anyone hhelp find the right answer?​
klio [65]

Answer:

but its right

Step-by-step explanation:

5 0
2 years ago
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A rectangle and a square have the same area. The width of the rectangle is 2 in less than the side of the square and the length
lina2011 [118]
The area of a rectangle is A=LW, the area of a square is A=S^2.

W=S-2 and L=2S-3

And we are told that the areas of each figure are the same.

S^2=LW, using L and W found above we have:

S^2=(2S-3)(S-2)  perform indicated multiplication on right side

S^2=2S^2-4S-3S+6  combine like terms on right side

S^2=2S^2-7S+6  subtract S^2 from both sides

S^2-7S+6=0  factor:

S^2-S-6S+6=0

S(S-1)-6(S-1)=0

(S-6)(S-1)=0, since W=S-2, and W>0, S>2 so:

S=6 is the only valid value for S.  Now we can find the dimensions of the rectangle...

W=S-2 and L=2S-3  given that S=6 in

W=4 in and L=9 in

So the width of the rectangle is 4 inches and the length of the rectangle is 9 inches.


5 0
3 years ago
The price of an item yesterday was $160 . Today, the price fell to 104 . Find the percentage decrease.
babymother [125]
The percentage drop would be 35%
6 0
3 years ago
A line passes through the point (-4,-8) and has a slope of -5/2.
kogti [31]
Here you go, and please mark brainliest :)

3 0
3 years ago
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Determine by inspection (i.e., without performing any calculations) whether a linear system with the given augmented matrix has
devlian [24]

Answer:

Infinitely Many Solutions

Step-by-step explanation:

Given

\left[\begin{array}{cccccc}1&2&3&4&5&6\\7&6&5&4&3&2\\8&8&8&8&8&8\end{array}\right]

Required

Determine the type of solution

From the matrix, we have:

3 non-zero rows and 5 variables (the last column is the result)

When the number of variables is more than the number of non-zero rows, then such system has infinitely many solutions

i.e.

Variables > Non\ zero\ rows

5 > 3

8 0
2 years ago
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