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cestrela7 [59]
3 years ago
7

What is the conjugate? Sqrt 8 - sqrt 9

Mathematics
2 answers:
jarptica [38.1K]3 years ago
4 0
<span> </span><span>The conjugate of an irrational number is the number you have to multiply it by in order to arrive at a rational number. 
</span>
Dafna1 [17]3 years ago
4 0

Answer:

\frac{-1}{(\sqrt{8}+\sqrt{9})}

Step-by-step explanation:

We are given the expression \sqrt{8}-\sqrt{9}.

So, the conjugate is given by,

(\sqrt{8}-\sqrt{9})\times \frac{(\sqrt{8}+\sqrt{9})}{(\sqrt{8}+\sqrt{9})}

i.e. \frac{(\sqrt{8})^{2}-(\sqrt{9})^{2}}{(\sqrt{8}+\sqrt{9})}

i.e. \frac{8-9}{(\sqrt{8}+\sqrt{9})}

i.e. \frac{-1}{(\sqrt{8}+\sqrt{9})}

Thus, the conjugate of the expression is given by \frac{-1}{(\sqrt{8}+\sqrt{9})}.

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Liono4ka [1.6K]

Answer:

C) 36

Step-by-step explanation:

Because 6^2=6*6=36.

3 0
3 years ago
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8.

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6 0
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Find the slope from points (9,-13), (7,-11)? <br> That’s what my question is
k0ka [10]

Answer:

Step-by-step explanation:

The entered points belong to an increasing, linear function.

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4 0
3 years ago
There are 10 yellow, 6 green, 9 orange, and 5 red cards in a stack of cards turned facedown. Once a card is selected, it is not
Iteru [2.4K]
10 yellow cards over 30 = 10/30
second selection : 9 yellow cards over 29 = 9/29

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<span> </span>
8 0
3 years ago
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20 points if you help
Talja [164]

A

The first equation has slope 6 and y intercept -4.  I'd plot y intercept (0,-4) and (1,2), and connect the dots and extend for the first line.

The second equation has slope 5 and y intercept -3.  I'd plot y intercept (0,-3) and (1,2), and connect the dots and extend for the second line.

We stumbled on the solution, both lines contain (1,2)

B

I don't like the graphing.  This is algebra, not connect the dots.

We have two equations for y, we equate them to find the x where they meet.

6x - 4 = 5x - 3

6x - 5x = -3 + 4

x = 1

y = 6(1) - 4 = 2

Check:  y = 5(1) - 3 = 2, good

Answer: (1, 2)

4 0
3 years ago
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