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Nonamiya [84]
3 years ago
11

) x+y" 4х у?2

x4 + y4 + x2y2" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
natka813 [3]3 years ago
3 0

Step-by-step explanation:

dowload mo photomath it will help you

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How many different seven-letter sequences can be formed from the letters a, a, a, a, a, b, c?
Kaylis [27]

If b is in the first position then c can be in any 1 of the remaining 6 positions.

If we start with ab then the letter c can be in any one of 5 positions and  if we have aab there are 4 possible positions for c and so on.

So the total number of possible sequences where b comes first = 6+5+4+3+2+1 =  21.

The same argument applies when c comes before b  so that gives us 21 ways also.

So the answer is 2 *21 = 42 different sequences.

A more direct way of doing  this  is to use factorials:-

answer = 7! / 5!     =  7 * 6 = 42.

 ( We divide by 5!   because of the 5 a's.)

4 0
3 years ago
At a computer​ store, a customer is considering 7 different​ computers, 9 different​ monitors, 8 different printers and 2 differ
AlekseyPX

Answer:

1008

Step-by-step explanation:

to find the number of combinations, just multiply everything. you will get 1008 :)

3 0
3 years ago
7.2g of sugar is needed for every cake made. How much sugar is needed for 9 cakes?
vazorg [7]

Answer:

64.8 grams of sugar

Step-by-step explanation:

brainliest plz

4 0
2 years ago
Good afternoon!
Vladimir [108]

9514 1404 393

Answer:

  5) 112°

  6) 40°

Step-by-step explanation:

5) The angle E or ? is half the sum of the intercepted arcs:

  ? = (130° +94°)/2 = 112°

__

6) The angle D is half the difference of the intercepted arcs:

  ? = (135° -55°)/2 = 40°

8 0
2 years ago
What is the approximation for the area of this circle? Use 3.14 to approximate pi. 12.6m 25.1m 50.2m 158.0m
Semenov [28]

Answer:

You times pi by the diameter

first set of answers are

1. 5.1

2 56.5

3 25.1

4 34.5

5 9.4

You times pi by r^2

second set of answers are

1 28.3

2 254.3

3 78.5

4 50.2

5 30.2

8 0
3 years ago
Read 2 more answers
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