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coldgirl [10]
2 years ago
7

Evealute the expression when m= -2 m^2+9m+3

Mathematics
1 answer:
Volgvan2 years ago
8 0

Step-by-step explanation:

m=-2

m^2+9m+3

substitute-2 in m

-2^2+9(-2)+3

= -19

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R = sec(θ) − 2cos(θ), where -π/2 < θ < π/2
Alex

Answer:

  y = (x/(1-x))√(1-x²)

Step-by-step explanation:

The equation can be translated to rectangular coordinates by using the relationships between polar and rectangular coordinates:

  x = r·cos(θ)

  y = r·sin(θ)

  x² +y² = r²

__

  r = sec(θ) -2cos(θ)

  r·cos(θ) = 1 -2cos(θ)² . . . . . . . . multiply by cos(θ)

  r²·r·cos(θ) = r² -2r²·cos(θ)² . . . multiply by r²

  (x² +y²)x = x² +y² -2x² . . . . . . . substitute rectangular relations

  x²(x +1) = y²(1 -x) . . . . . . . . . . . subtract xy²-x², factor

  y² = x²(1 +x)/(1 -x) = x²(1 -x²)/(1 -x)² . . . . multiply by (1-x)/(1-x)

  \boxed{y=\dfrac{x\sqrt{1-x^2}}{1-x}}

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The attached graph shows the equivalence of the polar and rectangular forms.

4 0
2 years ago
Kim is playing an online trivia game. she has 25 points and earns 1 point for each correct answer .she will advance to the next
zavuch27 [327]

Answer: 10 points

Step-by-step explanation:

She must get 10 answers right to get into the next round, if it need to be over 34

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4 0
2 years ago
Raul wants to buy a new collar for each of his 3 cats. The collars come in a choice of 4 different colors. Step 2 of 2 : How man
jeka57 [31]

Answer:

si

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Nine is more than twice n.
ella [17]
I hope this helps you


9=n.n

3.3=n.n

n=3
6 0
3 years ago
Prime factor of 24 tree
ASHA 777 [7]

\begin{array}{c|cc}24&2\\12&2\\6&2\\3&3\\1\end{array}\\\\24=2\cdot2\cdot2\cdot3=2^3\cdot3

5 0
3 years ago
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