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Lina20 [59]
2 years ago
9

X(x - 5) = -4 Solve the equation, using the quadratic formula.

Mathematics
1 answer:
leonid [27]2 years ago
5 0
1 and 4 are the answers!
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Prove:(coseca-sina)(seca-cosa)(tana+cota)=1
jolli1 [7]

Anis that cosine and sine?

Step-by-step explanation:

8 0
3 years ago
(y - 2)2 = y2 – 6y + 4<br> Is this statement true or false?
trasher [3.6K]
<h3>Answer: False</h3>

==============================================

Explanation:

I'm assuming you meant to type out

(y-2)^2 = y^2-6y+4

This equation is not true for all real numbers because the left hand side expands out like so

(y-2)^2

(y-2)(y-2)

x(y-2) .... let x = y-2

xy-2x

y(x)-2(x)

y(y-2)-2(y-2) ... replace x with y-2

y^2-2y-2y+4

y^2-4y+4

So if the claim was (y-2)^2 = y^2-4y+4, then the claim would be true. However, the right hand side we're given doesn't match up with y^2-4y+4

--------------------------

Another approach is to pick some y value such as y = 2 to find that

(y-2)^2 = y^2-6y+4

(2-2)^2 = 2^2 - 6(2) + 4 .... plug in y = 2

0^2 = 2^2 - 6(2) + 4

0 = 4 - 6(2) + 4

0 = 4 - 12 + 4

0 = -4

We get a false statement. This is one counterexample showing the given equation is not true for all values of y.

6 0
3 years ago
Read 2 more answers
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Provide electricty is the answer because if you use elec
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OK right image and easier to read lol
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Answer:

you want us to do all that

Step-by-step explanation:

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HELP!!!!! IN A RUSH!!!!!!! THANKS!!!!!!!!! :) Which statement is true?
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The correct answer is C all integers are whole numbers
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