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Masja [62]
3 years ago
5

What is the solution of the equation x2 + 4 = 0?

Mathematics
2 answers:
Snezhnost [94]3 years ago
7 0

Answer:

D

Step-by-step explanation:

The question on Edge 2020:

What are the solutions to the equation x2 + 4x + 5 = 0?

A) x = −4 + 2i or x = −4 − 2i

B) x = 1 or x = 4

C) x = −2 + i or x = 2 − i

D) x = −2 + i or x = −2 − i

Gala2k [10]3 years ago
4 0
X x 2 + 4 = 0
2x + 4 = 0
2x = -4
Divide both sides by 2
————> X = -2 <————-
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Then, just multiply the numbers.

(8^7)^3

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3 years ago
Please answer this correctly without making mistakes
scZoUnD [109]

Answer:

$0.31

Step-by-step explanation:

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Aleksandr [31]

The inequality that represents the steps taken after the first day is 2000 + 500x ≥ 10000

<h3>Part A: The inequality that represents the number of steps?</h3>

The given parameters are:

  • Initial number of steps = 2000
  • Rate each day = 500
  • Total number of steps = At least 10000

In inequality, at least means greater than or equal to i.e. ≥.

So, the inequality that represents the number of step each day (x) after the first day is:

2000 + 500 * x ≥ 10000

This gives

2000 + 500x ≥ 10000

<h3>Part B: How to exceed the goal</h3>

To exceed the goal faster, Angel can do any of the following activities:

  • Increase the initial number of steps from 2000 to (say) 2500. This is represented by 2500 + 500x ≥ 10000
  • Increase the rate from 500 to (say) 600. This is represented by 2000 + 600x ≥ 10000

Read more about linear inequalities at:

brainly.com/question/18881247

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5 0
3 years ago
Which of these shows 9 + 4p rewritten using the commutative property of addition?
anygoal [31]

Answer:

4p + 9

Step-by-step explanation:

Commutative property of addition:

Changing the order of addends does not change the sum.

<h3>Hope it is helpful...</h3>
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enyata [817]

9514 1404 393

Answer:

  see the attachment for a graph

Step-by-step explanation:

With the given point and slope, the equation of the line can be written in point-slope form:

  y -k = m(x -h) . . . . . line with slope m through point (h, k)

  y -2 = 1/2(x +1) . . . . line with slope 1/2 through point (-1, 2)

__

Slope is the ratio of rise to run, so a slope of 1/2 means the line will rise 1 unit for each 2 units of run (to the right). If you're plotting this by hand, you can identify a second point that is 2 right and 1 up from the given point:

  (-1 +2, 2 +1) = (1, 3).

You can draw your line through those two points.

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