3 years ago

What do I need to know about geometry proofs on a test?

Mathematics

2 answers:

ch4aika [34]3 years ago

8 0

Answer:

go to Google in search the about geometry

Vlad1618 [11]3 years ago

4 0

Know how to label the given and probably know how to get the steps of the proof. Good luck!

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Evaluate The Expression 3(× - 1)² +2× - 7 for × = 3

jeyben [28]

$\bf 3(x-1)^2+2x-7\implies \stackrel{\stackrel{x=3}{\cfrac{}{}}}{3[(3)-1]^2+2(3)-7}\implies 3[2]^2+6-7 \\\\\\ 3[4]+(-1)\implies 12-1\implies 11$

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4 years ago

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Oliga [24]

Answer:

For every 10 on the x axis, there is 80 on the y axis

Step-by-step explanation:

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4 years ago

−5x2 - 13x + 15 = -5x

Vsevolod [243]

Answer:

$5x^2+8x-15=0$

Step-by-step explanation:

$-5x^{2} -13x+15=-5x\\-5x^2-13x+5x+15=0\\-5x^2-8x+15=0\\$

$5x^2+8x-15=0$ [we transposed]

I think thats it

3 0

3 years ago

Does anyone know how to answer this question? Please write your working calculation as well if you do know the answer. Thanks so

krek1111 [17]

Answer:

Mark as brainliest if helped Thanks!

Step-by-step explanation:

funtion is:

$y = \frac{x^2 -1}{2x + 1}$

therefore $\\\frac{dy}{dx}\\$ is

$\frac{d\frac{x^2 -1}{2x + 1}}{dx}$

$\frac{\frac{x^2 -1}{2x + 1}}{x}$

$\frac{x^2 -1}{(2x+1) x}$

Now

$\int\limits^2_0 {\frac{x^2 +x +1 }{4x^2 +4 + 1} } \, dx$

(Calculation of this it too long and it is hard to type on brainly)

here is the answer though....

= 4/5

=0.8

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3 years ago

Solve the equation: -2x+3=5 Show your work.

vlabodo [156]

<span>-2x+3=5
Subtract 3 from both sides
-2x=2
Divide both sides by -2 so that the only thing remaining on one side is the variable x
Final Answer: x= -1</span>

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3 years ago

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