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____ [38]
3 years ago
6

Someone please help me by tonight I'm trying not to fail math. Also I will Brainliest if you help me get the right answer please

just help me.
1. What is the product of the complex numbers (3+i) and (3-i)?
A. 10-6i
B.9-i
C.8
D.10

2. Which expression Represents (-3-2i)-(5+i)?
A.-8-i
B.-8-3i
C.2-i
D.2-3i


3. What is the sum of the complex numbers (12-5i) and (-3+4i)?
A. 15-9i
B.9-i
C.9-9i
D.-16+63i

4. Which expression is equivalent to (6-2i)(2-3i)?
A. 6+22i
B. 18+22i
C. 6-22i
D. 18-22i

5. Simplify: (2+6i)-(3-5i)-(5-3i)
A. -4+16i
B. -6+14i
C. -6-2i
D. -4-4i

6. Which expression below is equivalent to 4i(12-7i)
A. -28+48i
B. -48+28i
C. 48+28i
D. 28+48i

7. Add √ -4+√-49
A. -9i
B. 5+I
C. 5-i
D. 9i​
Mathematics
1 answer:
vredina [299]3 years ago
6 0

Answer:

1. answer is D

2. Answer is D

3.Answer is B

4. Answer is C

5. Answer is B

6. Answer is D

7.Answer is D

Step-by-step explanation:

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Likurg_2 [28]
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$61.23

Explanation:

$38.85 + $22.38 = $61.23
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3 years ago
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2 Solve the equation for x: 3x – 5 = 5x + 2x.<br> Show your work.
Galina-37 [17]

Answer:

—5/4 or —1 1/4

Step-by-step explanation:

3x – 5 = 5x + 2x

Collect like terms

—5 = 5x + 2x — 3x

—5 = 4x

Divide both side by the coefficient of x i.e 4

x = —5/4 or —1 1/4

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3 years ago
In the given figure, identify which of the line segments is longer than XY. Question 15 options: A) TU B) PQ C) VW D) RS
dalvyx [7]

Answer:

A. T, U

Step-by-step explanation:

T and U are stretched across the paper. the others seem a bit close or smaller to the size of X and Y, but when you look at T and U they seem longer than X an Y

Hope this helps!!!  :)

7 0
3 years ago
PLEASEE HELP I WILL GIVE A BRAINLY
Genrish500 [490]

Answer:

a) 7x words

b) 1000/x days

c) 15000 + 10x words

Step-by-step explanation:

The best way to do this would be to plug in real numbers to see how each situation would play out.  For example, for part a, let's say he learns 20 new words each day.  One week has seven days, so that would be 20 x 7, which is 140 words.  You multiply the # of days by the # of words, which is x.

For part b, if he tried to reach 1000 new words by doing 20 new words a day, you would find how long that would take by doing 1000 / 20, which would give you 500 days.  You divide the # of new words he's trying to reach by the # of words a day.

For part c, he already has a set # of new words that he's learned, and now he's just continuing the progress, so you start out with 15000, then add that to 10 new words a day multiplied by # of days (x).

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Gre4nikov [31]

Answer:

The answer is 10

Step-by-step explanation:

Because 10 times 3 is 30. and 30 +46 is 76. Then you add 14 and that gets you 90 degrees

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3 years ago
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