What is the standard for of (1 7i)(3-i)?

1 answer:

7 0

3 -1i + 21i -7i2 now you have to fix the last factore because you have to change the imaginery i this would give you the answer of 3 - 1i + 21i +7 now add common factor which would give you the final answer of 3 +20i +7

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Brianna has 0.15 liter of a liquid. She will use 0.4 of this liquid. How many liters will she use?

alukav5142 [94]

Answer: 0.0375

Step-by-step explanation:

0.15 divided by 4 = 0.0375

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3 years ago

Draw the multiplication table on the P=(3,5,7,9) in module 12

Lisa [10]

Answer:

Find the attached file for the solution

Step-by-step explanation: To draw the multiplication table on the P=(3,5,7,9) in module 12, create the table where all the given parameters will be at the top of horizontal axis and vertical axis,

When multiply by each other, any value that is below 12 will be written down while the value greater than 12 will be divided by 12 and the remainder will be written down.

Find the attached file for the solution and table.

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A tree casts a shadow 21m long. The angle of elevation of the sun is 55 degrees. What is the height of the tree?

Orlov [11]

Answer:

The height of the tree is about 30 feet.

Step-by-step explanation:

tan(55) = h/21

*21 *21

21*tan(55)=h

29.99=h

h=29.99=30 feet

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3 years ago

What does 3 exponent -2 equal

inysia [295]

I am pretty sure your answer is going to be 243
I hope this helps, and good luck!!

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3 years ago

The orange shape is a dilation of the black shape

grigory [225]

Answer:

1/4

Step-by-step explanation:

The orange shape is 3 units tall and 4 units wide. The black shape is 12 units tall and 16 units wide. The scale factor is ...

orange/black = 3/12 = 4/16 = 1/4

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3 years ago