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lys-0071 [83]
3 years ago
14

Which of the following is a complex number?

Mathematics
1 answer:
Paraphin [41]3 years ago
4 0

You'll be disappointed to find out these are *all* complex numbers, because the set of real numbers is a subset of the complexes.

Probably the question means to ask, "which of these numbers is strictly non-real?" in which case D would be the answer because it contains the square root of a negative number that introduces the imaginary unit <em>i</em>. All the other options are strictly real numbers.

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Hayden is a manager at a landscaping company. He has two workers to landscape an entire park, Cody and Kaitlyn. Cody can complet
andrew11 [14]

Cody ALONE = 8 hours 
Kaitlyn ALONE = 6 hours 
Let Joseph ALONE take j hours 
Cody ALONE in 1 HOUR = 1/8 of the work Kaitlyn ALONE in 1 hour = 1/6 of the work Joseph ALONE in 1 HOUR = 1/j of the work 
Since TOGETHER they take X hours, in 1 hour TOGETHER they complete 1 / X of the work 
1/8 + 1/6 + 1/j = 1/X 
1/j = 1/X - 1/8 - 1/6 = (24 - 3X - 4X ) /24X = (24 - 7X ) / 24X 
j = 24X / ( 24- 7X ) 
After completing the work value of X will be known , calculate j from the above formula ANSWER
5 0
4 years ago
Colin thinks that n - 6 means 6 less than a number. Is Colin correct?
drek231 [11]

Answer: no

Step-by-step explanation: because it’s equal

4 0
3 years ago
Solve: -4x-8x+17=23<br> check solution
Sveta_85 [38]

Answer:

x = -1/2

Step-by-step explanation:

To solve the equation, we first need to combine like terms:

-12x+17=23

Simplify further:

-12x=6

Divide by -12 on both sides to get:

x = -\frac{1}{2}

To check  the solution, plug x back into the original equation and check if we get the correct answer:

-4(-\frac{1}{2})-8(-\frac{1}{2})+17=23

2+4+17= 23

23=23

Thus, it checks out and our answer is correct.

4 0
3 years ago
A bin of winter hats on clearance contains 6 green caps, 7 blue caps, and 9 red caps If you pick one without looking, what is th
SCORPION-xisa [38]

Answer:

Since it is the case of independent the answer will be 6/22

7 0
3 years ago
Alex swims 20 minutes per day for exercise. The total
sveticcg [70]

Answer:

e total number of minutes, m.

Step-by-step explanation:

The dependent variable is the variable in which the variable cannot stand by itself.

In this situation, the total number of minutes, m, equal 20 times the number of d.

m = 20d

d, is a variable which can be multiplied which states that it has a value, no matter what. On the other hand, m, requires d, to be there in order to have a value.

The answer is, m, the total number of minutes.

Step-by-step explanation:

5 0
3 years ago
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