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3 years ago

Help me solve 2i(4-2i)=

Mathematics

1 answer:

velikii [3]3 years ago

5 0

Simplified answer is 4+8i

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denis-greek [22]

Answer:

Part a) $AB=15\ cm$

Part b) $AB=11.1\ cm$

Part c) $AB=3/5\ cm$

Part d) $AB=3s\ cm$

Step-by-step explanation:

see the attached figure to better understand the question

we know that

To find the length of the image after a dilation, multiply the length of the pre-image by the scale factor

Part a) we have

The scale factor is 5

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(5)=15\ cm$

Part b) we have

The scale factor is 3.7

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(3.7)=11.1\ cm$

Part c) we have

The scale factor is 1/5

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(1/5)=3/5\ cm$

Part d) we have

The scale factor is s

The length of the pre-image is 3 cm

therefore

The length of the image AB after dilation is

$3(s)=3s\ cm$

7 0

3 years ago

Which is a correct first step for solving this equation? 4x=7+3(2x−5)

jeka94

Doing (2x-5) first is what

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3 years ago

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Given the function f(x) = x - 4, find f(-2).

Mars2501 [29]

Answer: f(-2) = -6

Step-by-step explanation: f(-2) = -2 -4

f(-2) = -6

6 0

2 years ago

2+2=? What is the problem?

slamgirl [31]

Answer:

2+2=4

Step-by-step explanation:

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If you have 3 sticks of length 2 cm, 3 cm and 5 cm. What kind of triangle these sticks would form? Justify your answer.

stepan [7]

Answer:

Scalene triangle (As the definition says)

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3 years ago