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swat32
3 years ago
6

(2x-y)2-(y+2)2:::::::::::::::

Mathematics
1 answer:
Reil [10]3 years ago
6 0

Answer:

(2x - y )2 - (y + 2)2 = 4 (x - y - 1)

Step-by-step explanation:

(2x -y) 2 - ( y + 2 ) 2 = (4x -2y) -(2y + 4) \\\\

                             = 4x - 2y -2y - 4\\\\=4x - 4y - 4\\\\=4(x-y-1)

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Need help asap, Will give brainliest! please answer correctly!
Dominik [7]

Answer:

D

Step-by-step explanation:

We can solve this particular problem entirely by elimination. First, notice, that our inequality simply says the left side is <em>less than</em> the right, not <em>less than or equal to</em>. If it were less than or equal to the value on the right, it would include all of the points on the boundary line, and we'd indicate this with a solid line. In our situation, the left side is never <em>equal</em> to the right, so we'd use a dotted line to draw our boundary line. Only B and D fit the bill.

So between B and D, which one represents 4y+8? Well, setting the two sides equal to each other, we'd get the equation for a line. If (x, y) is a point on that line, then, what does mean when we say the side with y on it is less than the side with the x on it? It means we'd have to <em>decrease </em>the y value of a point on the line, which would give us a point <em>below </em>the line. So our graph has to show <em>every point below the line 4y + 8 = -3x</em>, and the only answer that represents this situation is D

5 0
4 years ago
Please help me. thanks ​
Tasya [4]

Answer:

40 ft/1 in

Step-by-step explanation:

120ft/3in=40ft/1 in

3 0
4 years ago
Brian purchased a pizza and shared 34 of the pizza with his friends. Each friend received 1/4 of the pizza. With how many friend
Veseljchak [2.6K]

Answer:

3 friends ( unless u mean 3/4 instead of 34 then its 2 friends)

Step-by-step explanation:

8 0
3 years ago
PLEASE HELP ME THIS IS A TEST PROBLEM I NEED HELP 100 POINTS AND BRAINLELST
SpyIntel [72]

Answer:

C

Step-by-step explanation:

5 0
3 years ago
What is the whole number value of n?
allsm [11]
13^2 + 2 * 13 * n + n^2 = 18^2
169 + 26n + n^2 = 324
26n + n^2 = 324 - 169
26n + n^2 = 155
n^2 + 26n - 155 = 0
(n - 5)(n + 31) = 0

n - 5 = 0
n = 5

n + 31 = 0
n = -31.....not this one because it is negative

so n = 5 <===
4 0
3 years ago
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