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Step2247 [10]
2 years ago
14

Evaluate/simplify this problem (3 - 3i)(-6 + 3i)

Mathematics
2 answers:
mezya [45]2 years ago
6 0
Multiply using the foil method, then combine. This will give you -9+27i
igor_vitrenko [27]2 years ago
4 0
-18+9i because if you use the foil technique then this would be your answer

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A honeybee flaps its wings 200 times per second.how much time is required for one wingbeat? give your answere in millisecond
Fiesta28 [93]

The time required for one wing beat is 5 milliseconds.

<em><u>Explanation</u></em>

Lets assume, the time required for one wing beat is  t seconds

So, the time required for 200 wing beat = 200t seconds

Given that, the honeybee flaps its wings 200 times per 1 second. So...

200t=1 \\ \\ t=\frac{1}{200}seconds\\ \\ t= (\frac{1}{200}*1000 )milliseconds\\ \\ t=( 5 )milliseconds

So, the time required for one wing beat is 5 milliseconds.

7 0
2 years ago
PLEASE HELP ME!!!!
antiseptic1488 [7]

Answer:

OBC= 15

OCR =30

In OBQ

OBQ + QOB + OQB = 180

OBQ= OBC=15

OQB= 90

SO, QOB = 180- OBQ- OQB

= 180-15 -90

= 75

c) is correct

5 0
3 years ago
Read 2 more answers
Please help me!<br> I have problem understanding.<br> Please give me workings
Ivanshal [37]

Answer:

A)7

B)14

C)20

D)18

Step-by-step explanation:

For example 2/5 of 80

2/5 x 80/1 =32 Cross cancel

7 0
3 years ago
In calm water, the motorboat of Jana is moving at the speed of 16.5km/h. On a river, because of the current, the boat moves fast
ki77a [65]

Answer: 707 km/h

Step-by-step explanation:

let c = speed of current

16.5 + c = speed of sailboat downstream

16.5 - c = speed of sailboat upstream

distance = travel time * speed

﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋

2(16.5 + c) = 5(16.5 - c)

33 + 2c = 82.5 - 5c

7c = 49.5

c = 7.07 km/h

4 0
1 year ago
How many feet are there in 24 yards? <br><br> A. 288<br> B. 8<br> C. 2<br> D. 72
Mkey [24]
First of all we need to know that 1 yard has 3 feet inside of it 
but in order to find 24 yards we would have to multiply by 3 sooo
24 x 3 = 72
so that means there are 72 feet in 24 yards.
In other words the answer is D:)
hope this helps:P
MARK ME BRAINLIEST!


6 0
3 years ago
Read 2 more answers
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