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pychu [463]
2 years ago
14

(3-4i)(1+5i)-(2-1) Please give me the correct answer

Mathematics
1 answer:
attashe74 [19]2 years ago
8 0

Answer:

2-9i

Step-by-step explanation:

(3-4i)(1+5i)-(2-1)

Expand the algebra expression, and we have

3(1+5i)-4i(1+5i)-(1)

3+15i-4i-20i-1

Collect like terms

3-1+15i-4i-20i

2+11i-20i

2-9i

Please note that algebra expressions does not have the sign of equality.

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A ladder leans against the side of a house. The angle of elevation of the ladder is 68° when the bottom of the ladder is 16 it f
choli [55]

Answer:

The length of the ladder  = 6.5077 ft

Step-by-step explanation:

Given A ladder leans against the side of a house

Given the angle of elevation of the ladder is 68° when the bottom of the ladder is 16 ft from the side of the house

Let 'C' be the point of observation.

Given CA= 16 ft

 From right angle triangle

     

     

     x = 16 × cos 68°

    x = 16 × 0.4067

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The length of the ladder = 6.5 ft

8 0
3 years ago
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Gnoma [55]

Answer:

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3 years ago
Solve the following system of equations algebraically:<br> Y = x^2 + 8x – 9<br> Y = 2x + 7
julia-pushkina [17]
Use simultaneous equations:
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7 = x^2 + 6x - 9
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answer is
-4/7 or 4/7
3 0
2 years ago
HELP HELP HELP ME YOU'LL GET 50+ BRAINLIEST POINTS PLEASE HELP ME PLEASE PLEASE ANSWER CORRECTLY PLEASE
yaroslaw [1]
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3 0
2 years ago
Peter's Party Zone sells cups in packages of 6 and plates in packages of 8 . Shaniya is hosting a birthday party for her little
kirill [66]

Answer:

6

Step-by-step explanation:

find a common factor

6*8=48

8*6=48

8 0
3 years ago
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