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vlada-n [284]
3 years ago
5

What is

6 + \sqrt49" align="absmiddle" class="latex-formula"> written as a complex number in the form a + bi?
A. 7 - 4i
B. 4 + 7i
C. 7 + 4i
D. -4 + 7i
Mathematics
1 answer:
laiz [17]3 years ago
3 0

Answer: C. 7+4i

Step-by-step explanation:

Just did the math.... square root of -16= 4i+ equate root of 49=7.

So...the answer is 7+4i

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Name the property shown by each statement : 3+(x+4) = (x+4)+3
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Answer:

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Step-by-step explanation:

You can switch the order.

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Determine if the equations are parallel perpendicular or neither 10x-2y=16 and x+5y=-20
Inessa [10]

Answer:

perpendicular lines

Step-by-step explanation:

First, put both equations into slope-intercept form.

Lets start with 10x - 2y = 16

Remember that the slope intercept formula is y = mx + b

So, we must get y alone on one side.

First, subtract 10x from both sides

10x - 2y = 16

-2y = -10x + 16

Now, divide both sides by negative 2

y = 5x - 8

Now for our second equation.

First we must subtract x from both sides

x + 5y = -20

5y = -x - 20

Now, divide both sides by 5

y = -1/5x - 4

Now, both of our equations are in slope-intercept form

Here's how to determine if two equations are parallel or perpendicular

<em>Remember that the m in y = mx + b is our slope</em>

Parallel = same slope

Perpendicular = negative reciprocal slope

(ex: take the number 6                             take the number -3

negative reciprocal = -1/6                        negative reciprocal = 1/3)

If we look at the slopes in both of our equations, we see that there is a negative reciprocal slope (the slopes are 5 and -1/5)

So, these two lines are perpendicular. :)

3 0
3 years ago
Gavin earned $12.58 and Niko earned $9.35 last week doing chores. They
koban [17]

Answer:

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Step-by-step explanation:

Subtraction dude.

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2 years ago
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3 years ago
BD is the bisector of angle ABC. Find the length of the segment AE.
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