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ryzh [129]
3 years ago
15

DON'T ANSWER FREE POINTSSSS

Mathematics
2 answers:
kumpel [21]3 years ago
6 0

Answer:

0

Step-by-step explanation:

steposvetlana [31]3 years ago
3 0

Answer:

\boxed{n = -13 - 4i}

Step-by-step explanation:

\text{Assuming } i=\sqrt{-1}

(13 + 4i) + n = 0

n = -(13 + 4i)

\boxed{n = -13 - 4i}

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\huge\boxed{1, 2, 3, 6, 7, 14, 21, 42}

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Please help me, thank you
Alenkinab [10]

Problem 1

Answer: C) No solution

---------------------------

Explanation:

We have z = -4 and 4z = -4 at the same time. Solving 4z = -4 leads to z = -1

So in effect we have z = -4 and z = -1 at the same time, but this is a contradiction. A variable can only hold one number at a time.

======================================================

Problem 2

Answer: C) Infinitely many solutions

---------------------------

Explanation:

The two equations are equivalent. You can prove as such by isolating 2y in the first equation.

5x = 8-2y

5x+2y = 8

2y = 8-5x

2y = -5x+8

-5x+8 = 2y

This shows the first equation is equivalent to the second, and vice versa. They both graph the same line. Any point along the line is a solution. So that's why there are infinitely many of them.

======================================================

Problem 3

Answer: Choice A) -6 < y \le 3

---------------------------

Explanation:

The range is the set of the possible y values. We're concerned with every y coordinate of each (x,y) solution. So we only focus on the shaded region.

The dashed line means we exclude the boundary. It's an electric fence we cannot touch. So y > -6 or -6 < y describes part of the range

The other part is y \le 3 since y = 3 is the when the highest point occurs.

So writing -6 < y \le 3 describes all possible y values of each (x,y) solution in the shaded region.

6 0
3 years ago
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