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PolarNik [594]
3 years ago
12

What sets of ordered pairs represents a function ? A={(2,-2), (5,-5) (-2,2)(-5,5)} B={(4,2), (4,-2) , (9,3) (9,-3)}

Mathematics
1 answer:
Zina [86]3 years ago
8 0

Answer: A

Step-by-step explanation:

In a function, one x value (the number in front) goes to one y value.

In {(4, 2), (4, -2)}, the x value 4 goes to two y values (2 and -2), which lets you know it’s not a function.

Hope this helps!

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Write -4i+(1/4-5i)-(-3/4+8i)+17i as a complex number in the standard for
KatRina [158]

Answer:

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Step-by-step explanation:

A complex number is a number which has some real part and some imaginary part.

Standard form of a complex number is represented as

a +bi

Where a is the real part,

and bi is the imaginary part.

And i = \sqrt{-1}

Given complex number:

-4i+\dfrac{1}{4}-5i)-(-\dfrac{3}{4}+8i)+17i\\\Rightarrow -4i+\dfrac{1}{4}-5i + \dfrac{3}{4}-8i+17i\\\Rightarrow  \dfrac{3}{4}+\dfrac{1}{4}-4i -5i-8i+17i\\\Rightarrow  \dfrac{3+1}{4}-17i+17i\\\Rightarrow \dfrac{4}{4}+0i\\\Rightarrow 1 + 0i

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8 0
3 years ago
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antiseptic1488 [7]
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3 years ago
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ollegr [7]

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4. (Optional) If the question is asking for mixed numbers, 41/21 = 1 20/21.

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