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STALIN [3.7K]
3 years ago
12

B)

Mathematics
1 answer:
ollegr [7]3 years ago
5 0

Answer:

P + Q = 1

Step-by-step explanation:

Given: \frac{1+\sqrt{3} }{1-\sqrt{3} }  = P - \sqrt{Q}

This is a question on surd, so we need to rationalize the denominator to have;

\frac{1+\sqrt{3} }{1-\sqrt{3} }  * \frac{1+\sqrt{3} }{1+\sqrt{3} } = \frac{1+\sqrt{3}+\sqrt{3}  + 3}{1+\sqrt{3}-\sqrt{3} -3 }

   = \frac{4+ 2\sqrt{3} }{1-3}

   = \frac{4+2\sqrt{3} }{-2}

   = -2 - \sqrt{3}

Thus,

-2 - \sqrt{3} = P - \sqrt{Q}

⇒ P = -2 and Q = 3

Therefore, the value of P + Q = -2 + 3

                                                 = 1

Thus,

P + Q = 1

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B

Step-by-step explanation:

the sum of angles of triangle=180

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8 0
3 years ago
when a polynomial x^3-ax^2-2x+2a+6 leaves a remainder (a+2) when divided by (x-a), find the value of a.​
Tatiana [17]

Answer:

a = 4

Step-by-step explanation:

We are given that the polynomial:

\displaystyle x^3 - ax^2 - 2x + 2a + 6

Has the remainder (<em>a</em> + 2) when divided by (<em>x</em> - <em>a</em>), and we want to determine the value of <em>a</em>.

Recall that from the Polynomial Remainder Theorem, when dividing a polynomial P(x) by a binomial (<em>x</em> - <em>a</em>), the remainder will be given by P(a).

Since the remainder is (<em>a</em> + 2) when divided by (<em>x</em> - <em>a</em>), P(a) must equal (<em>a</em> + 2):

\displaystyle P(a) = a+2

Substitute:

\displaystyle (a)^3 - a(a)^2 -2(a) + 2a + 6 = a + 2

Simplify and solve for <em>a: </em>

<em />\displaystyle \begin{aligned} a^3 - a^3 - 2a + 2a + 6 &= a + 2 \\ \\ 6 &= a+2 \\ \\ a &= 4\end{aligned}<em />

<em />

In conclusion, the value of <em>a</em> is 4.

7 0
3 years ago
The sports store has 50 tennis rackets. of these 3/5 are metal. how many tennis rackets are metal?
ella [17]
30.
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6 0
4 years ago
I don't know how do do it can u help me ​
Blizzard [7]

Answer:

The second regon

Step-by-step explanation:

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Darian is multiplying 3/4 by 1/2
katovenus [111]

3/8 is the right answer to that question



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4 years ago
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