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Tresset [83]
3 years ago
10

Can anyone assist me with this please and thank you

Mathematics
1 answer:
shtirl [24]3 years ago
6 0

a) 7! = 7*6*5*4*3*2*1 = 5040 different ways  

b) 7C4 = 7! / (4!3!) = (7*6*5) / (3*2*1) = 35 ways

c) See above 4*3*2*1 = 24 ways

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Simplify the expression.<br><br> can anyone explain to me how to do this? please
WINSTONCH [101]

Answer:

The answer is the last one (32x^7y^15)

You can bring x to the second power (x^2) because (x) is basically x^1. This is a basic exponent rule. (x^m)^n = x^m times n.

Then you can apply this rule to (2xy^3)^5. First you bring two to the fifth power and get 32. Then you bring x^5 according to the rule. Then you bring y^15, also because of the rule.

Now you have:

x^2 times 32x^5y^15

Now you just multiply the like terms together (x^2 and x^5)

When you multiply two exponents with the same base, you add the exponents together: a^n times a^m = a^n+m.

So you end up with 32x^7y^15



5 0
3 years ago
Read 2 more answers
How would I solve this
irinina [24]

Answer:

  • 570 mph
  • 610 mph

Step-by-step explanation:

Let x represent the speed of the slower plane. The faster plane's speed is then x+40. The sum of speeds is ...

   x + (x+40) = 1180

  2x = 1140 . . . . subtract 40

  x = 570 . . . . . .divide by 2

  x+40 = 610 . . . . the speed of the faster plane

The two speeds are 570 mph and 610 mph.

7 0
3 years ago
What is 130% converted into a decimal?
Free_Kalibri [48]
Move the percent two places to the left 1.30
8 0
3 years ago
Find the geometric mean of the pair of numbers.
Nikolay [14]
Thank you for posting your question here at brainly. Feel free to ask more questions.  

The best and most correct answer among the choices provided by the question is <span>A. 44</span>.<span>       
    </span><span>
Hope my answer would be a great help for you.</span>
4 0
3 years ago
The school library is (3x - 4) metres long and (2x - 3) metres wide. Find the floor area of the library in:
Svetllana [295]

Answer:

40 meters

Step-by-step explanation:

x=4

3x-4=12-4

2x-3=8-3

12-4=8

8-3=5

8x5=40

5 0
2 years ago
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