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HACTEHA [7]
3 years ago
7

Hi can someone help me with this its due tommorow!!!

Mathematics
2 answers:
maksim [4K]3 years ago
7 0
It is not 1/12. the correct answer is A. 1/2
bulgar [2K]3 years ago
4 0

Answer:

1/12

Step-by-step explanation:

Is the answer I'm bro

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For each function below, determine whether or not the function is injective and whether or not the function is surjective. (You
Harlamova29_29 [7]

Answer: First, injective means that for every y, there is only one x such f(x) = y, and surjective means that if f is a function that goes from the set {x} to the set {y}, for every element y in the codomain there is at least one element x in the domain such f(x) = y

(a) f:R----> + R given by f(x) = x2 (i guess you written x^{2})

The function is not injective, because f(-2) = f(2), and is surjective, because the codomain is +R, and x^{2} is always a positive real number.

(b) f:N----> + N given by f(n) = n2  (i guess you written n^{2})

As the naturals have no negative numbers, in this case the function is injective, but isn't surjective, because there is no number that when squared is equal to 5, for example.

(c) f: Zx Z → Z given by f(n, k) = n +k:

here the domain is of the form (n,k) and the function is n +k, so the numbers (z,w) and (w,z) return the same value when evaluated in f, then f is not injective. And is easy to see that f is surjective, because in the sum you can reach al the integers on the codomain.

3 0
3 years ago
Which of the following is the conjugate of 10 – 3i?
ipn [44]

we know that

The conjugate of a complex number is the number with equal real part and imaginary part equal in magnitude but opposite in sign

so

In this problem we have

10-3i

the conjugate is equal to--------> 10+3i

therefore

<u>the answer is the option</u>

10+3i

3 0
2 years ago
Read 2 more answers
Find an equation for the nth term of the arithmetic sequence.
vekshin1
The answer is the second answer choice, an = -13 + 5(n - 1)
5 0
3 years ago
Read 2 more answers
¡¡¡40 POINTS!!!
natulia [17]

Answer:

C

Step-by-step explanation:

Given

5x + 10y - 15 ← factor out 5 from each term

= 5(x + 2y - 3) → C

4 0
3 years ago
20 pts! please help? &lt;3
FinnZ [79.3K]
The answer is a because i said so.
6 0
3 years ago
Read 2 more answers
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