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Daniel [21]
3 years ago
6

Write the product in standard form. ( 9 + 5i)( 9 + 8i)

Mathematics
1 answer:
disa [49]3 years ago
8 0
<span>( 9 + 5i)( 9 + 8i)
= 9(9+8i)+5i(9+8i)
= 81+72i+45i+40i^2
= 81+117i+40(-1)
= 81-40+117i
= 41+117i. Answer</span>
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Brums [2.3K]
The answer is B) 9/11 = 18/22 would make the best answer because the rest don't have any solutions at all because since your trying to make it equal, It just possibly wont do since its false.
3 0
3 years ago
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A quality control inspector samples 2 computer chips from a box containing 13 computer chips. If the box contains 3 defective ch
elena-14-01-66 [18.8K]

Answer:

The number of ways to select a sample of 2 computer chips so that at least one of the chips is defective is 33 ways.

Step-by-step explanation:

The box contains 13 computer chips. Of these 13 chips 3 are defective and 10 are good.

A quality control inspector samples 2 computer chips.

The number of ways to select at least 1 defective chip is:

n (At least 1 defective chip) = n (1 defective chip) + n (2 defective chips)

The number of ways to select 1 defective chip is: {3\choose 1}{10\choose 1}=3\times10=30 ways.

The number of ways to select 2 defective chips is:{3\choose 2}{10\choose 0}=3\times1=3 ways.

n (At least 1 defective chip) = n (1 defective chip) + n (2 defective chips)

                                             = 30 + 3

                                             = 33

Thus, the number of ways to select a sample of 2 computer chips so that at least one of the chips is defective is 33 ways.

5 0
3 years ago
A rectangular room is 3 times as long as it is wide, and its perimeter is 32 meters. Find the dimensions ofthe room.The length i
Grace [21]

Answer:

Width = 4m

Length = 12 m.

Step-by-step explanation:

Let width = x, then length = 3x.

Perimeter

= 2(3x + x) = 32

2 * 4x = 32

x = 32 / 8 = 4 m.

The length = 3*4 = 12m and width = 4 m.

6 0
1 year ago
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4+3 = 7

2 pies/7 people

.28571429 pies

Each person gets .29 pie

Hope this helps.


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2 years ago
What is 6 ft times 8 ft divided by 2
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24 is the answer to the question
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3 years ago
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