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3 years ago

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If u = 1 + i and v = 1 – i, what is u + v? A.2 B.0 C.-2i D.-2 E.2i

2 answers:

Gnoma [55]3 years ago

7 0

Answer:

2

Step-by-step explanation:

Remark

Treat that i as though it were any letter used as variable. The fact that it represents the square root of minus 1 is not an issue here. If you have 5x -5x the result is 0.

Same thing with this question

u + v = 1 + i + 1 - i = 2 The two "i"s cancel and the two "1"s add. The answer is 2

Scrat [10]3 years ago

3 0

Answer:

2

Step-by-step explanation:

u = 1+i

v = 1-i

add them together

1+i

1-i

------

2 +0

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Show your work and explain in a full sentence how 4 2/6 is equivalent to 3 8/6

Naddik [55]

Answer:

Multiply the whole numbers by their denominators and then add the product to their numerators. You will notice that they equal the same improper fraction.

Step-by-step explanation:

4 * 6 = 24.

24 + 2 = 26.

4 2/6 as an improper fraction equals 26/6.

3 * 6 = 18.

18 + 8 = 26.

3 8/6 as in improper fraction equals 26/6 as well.

So that is how they are equivalent.

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3 years ago

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A point is represented by a:

Thepotemich [5.8K]

Answer:

i would say the first one and second one

Step-by-step explanation:

because the point is an o and an dot at the same time

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3 years ago

The volleyball team and the wrestling team at Stamford High School are having a joint car wash today,

Sedbober [7]

Answer:

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Number of cars washed = <em>11</em>

Step-by-step explanation:

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Let the number of cars washed = $x$

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Money raised by washing each car by volleyball team = $1

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Given that, both the teams have raised same amount of money:

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3 years ago

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kvasek [131]

I have to go with True because a Rhombus is a Square.

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3 years ago

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Dafna1 [17]

Answer:

The answer is choice B: 22.52 units.

Step-by-step explanation:

We use the Pythagoras's theorem which says for a right triangle with sides $x,y$ and hypotenuse $z$ :

$x^2+y^2=z^2.$

In our case

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So we solve for $x:$

$x=\sqrt{z^2-y^2}=\sqrt{26^2-13^2} =\boxed{22.52\: units.}$

Which is choice B.

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