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max2010maxim [7]
3 years ago
5

Multiply and simplify the following complex numbers: (−3−i)⋅(3+i)

Mathematics
2 answers:
Gennadij [26K]3 years ago
7 0

Answer:

-8-6i

Step-by-step explanation:

(-3-i)(3+i) = -3(3)-3i-3i-i^2 = -9-6i-(-1) = -9-6i+1 = -8-6i

Hope this helped!

artcher [175]3 years ago
7 0

Answer:

-8-6i

Step-by-step explanation:

(happy to help)

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I think 15 is the answer I’m not sure tho
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3 years ago
Can someone plz help me solved this problem I need help plz help me! Will mark you as brainiest!
baherus [9]

Answer: x^2 -3

That's x squared minus three

Step-by-step explanation:

When you divide 2x^3 by 2x the 2's cancel, and x cubed becomes x squared.

In 6x divided by 2x, the X's cancel and 6 ÷2=3

BTW "cancels" means that a number divided by itself equals one, so it "disappears" from the expression

7 0
3 years ago
write an equation of a line perpendicular to the givin equation using the given point givne (8,2); x = -4
MakcuM [25]

y=-x+10 is the equation of a line perpendicular to the givin equation using the given point given (8,2) and x = -4

<h3>What is Slope of Line?</h3>

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

In the perpendicular lines the product of slopes will be -1

m1m2=-1

y=x+4 is the given line, it has slope of 1, so the perpendicular line will have slope -1.

The line is passing through (8,2)

2=-1(8)+b

2=-8+b

2+8=b

10=b

Hence, y=-x+10 is the equation of a line perpendicular to the givin equation using the given point given (8,2) and x = -4

To learn more on slope of line click:

brainly.com/question/14511992

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4 0
1 year ago
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allochka39001 [22]

Answer:

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Step-by-step explanation:

Direction vector:

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You can also take a scalar multiple

So, I'm using (1, 1, -1) as the direction vector

x(t) = 1+t

y(t) = -1+t

z(t) = 5-t

8 0
3 years ago
A quadrilateral ABCD has the area 10 square feet. After a dilation with a scale factor of 3, find the area of quadrilateral A'B'
gtnhenbr [62]

10 x 3^2

= 10 x 9

= 90

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2 years ago
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