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satela [25.4K]
3 years ago
11

List five different times in which the minutes before are the same as the minutes after the hour

Mathematics
2 answers:
murzikaleks [220]3 years ago
5 0
<span><u><em>Answer:</em></u>
1:30,
2:30,
3:30,
4:30,
5:30
<span>
<u><em>Explanation:</em></u>
All of the times that end in 30 will fit the criteria because for example 1:30 is 30 minutes after 1:00 and 30 minutes before 2:00. this would hold true for 1 through 12.
If using the military time system you could have 13-24 as well.

<u>All possible answers are listed below: </u>
0:30,
1:30,
2:30,
3:30,
4:30,
5:30,
6:30,
7:30,
8:30,
9:30,
10:30,
11:30,
12:30,
13:30,
14:30,
15:30,
16:30,
17:30,
18:30,
19:30,
20:30,
21:30,
22:30 and
23:30.     </span></span>
Sedbober [7]3 years ago
4 0

Answer:

  • 5:50 and 6:10
  • 2:15 and 1:45
  • 7:40 and 8:20
  • 11:55 and 12:05
  • 4:30 and 3:30

Step-by-step explanation:

We are asked to write 5 different times such that the minutes after is equal to the numbers before that hour.

  • First time is:

5:50 and 6:10

Thus in this time 5:50 the minute before 6 is 10 minutes and in the time 6:10 the minutes after is 10 minutes.

  • Second time are:

2:15 and 1:45

The time 2:15 represents fifteen minutes after 2 and the time 1:45 represents fifteen minutes before 2.

  • Third time is:

7:40 and 8:20

The time 7:40 represents 20 minutes before 8 and 8:20 represents 20 minutes after 8.

  • Fourth time is:

11:55 and 12:05

The time 11:55 represents 5 minutes before 12 and 12:05 represents 5 minutes after 12.

  • Fifth time is:

4:30 and 3:30

Where 4:30 represents 30 minutes after 4 and 3:30 represents 30 minutes

before 4.

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Let x = a bi and y = c di and z = f gi which statements are true? check all of the boxes that apply. x y = y x (x × y) × z = x ×
Alex73 [517]

A complex number is a part of a number system that includes a real unit and an imaginary unit. All the statements are true except C and E.

<h3>What is a Complex Number?</h3>

A complex number is a part of a number system that includes the real numbers as well as a particular element labelled i, sometimes known as the imaginary unit, and which obeys the equation i² = 1.

As it is given that x=(a+bi), y=(c+di), and z=(f+gi), therefore, we need to plug in the values to check which all are true.

A.) x+y=y+x

x+y=y+x\\a+bi+c+di=c+di+a+bi

As the two sides of the equation are equal, the equation is true.

B.) (x × y) × z = x × (y × z)

(x \times y) \times  z = x \times  (y \times  z)\\\\\ [ (a+bi)  \times (c+di) ]\times (f+gi) = (a+bi)  \times [(c+di) \times (f+gi)]\\\\(ac+adi+bci-bd) \times (f+gi)=  (a+bi)  \times (cf+cgi+fdi-dg)

(ac+adi+bci-bd) \times (f+gi)=  (a+bi)  \times (cf+cgi+fdi-dg)\\\\\\acf+adfi+bcfi-bdf+acgi-adg-bcg-bdgi = acf+acgi+afdi-adg + bcfi-bcg-bfd-bdgi

As the two sides of the equation are equal, the equation is true.

C.) x−y=y−x

x-y=y-x\\\\(a+bi)-(c+di)=(c+di)-(a+bi)\\\\a+bi-c-di=c+di-a-bi

As the two sides of the equation are not equal, the equation is not true.

D.) (x+y)+z=x+(y+z)

(x+y)+z=x+(y+z)\\\\(a+bi+c+di)+f+gi = a+bi+(c+di+f+gi)\\\\a+bi+c+di+f+gi = a+bi+c+di+f+gi

As the two sides of the equation are equal, the equation is true.

E.) (x−y)−z=x−(y−z)

(x-y)-z=x-(y-z)\\\\(a+bi-c-di)-f-gi = a+bi-(c+di-f-gi)\\\\a+bi-c-di-f-gi =a+bi-c-di+f+gi)

As the two sides of the equation are not equal, the equation is not true.

Hence, all the statements are true except C and E.

Learn more about Complex Number:

brainly.com/question/12464608

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43 ones x 3 tens= Tens
spayn [35]
The answer is 1290
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