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insens350 [35]
4 years ago
14

When Kevin plays chess with Aaron, the probability that Kevin wins is 0.75. If Aaron and Kevin play 25 games, what is the probab

ility that Kevin wins exactly 15 times?
Mathematics
2 answers:
Ivan4 years ago
7 0

Answer:


Step-by-step explanation:

plato .04

avanturin [10]4 years ago
4 0
P(x=15) = 0.0416 ........
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Explain why 0.04/3.6 has the same answer as 4/360
lisov135 [29]
Because when you divide you get the same answer or something to do with percents
7 0
3 years ago
Explain some methods of reducing friction between of matyer​
Simora [160]

Answer:

Step-by-step explanation:

1. Use of lubricants

Lubricants like oil and grease helps to decrease friction by forming a thin film in between different parts of the machine. This film covers up the scratches and bumps on the surfaces of different parts. This reduces interlocking between the two surfaces.  Thus reducing the friction.

2. Use ball bearings

Two moving surfaces in a machine are attached by placing small steel balls or steel rollers  in between them. This way, the moving parts avoid direct contact and the force of sliding friction turns into rolling friction. Rolling friction is less than sliding friction, in doing so reducing the friction.

3. Polishing

Polishing reduces the unevenness  of a surface. This will reduce interlocking between the surfaces.  

4. Streamlining

Streamlining is the process where you make a machine in a shape that avoids air and water resistance. This reduces friction because a streamlined object cuts through the water and air molecules.

7 0
3 years ago
What is an equation for the line perpendicular to y = 3x – 1 that passes through (-9, -2)?
FinnZ [79.3K]

Answer:

  • y = -1/3x - 5

Step-by-step explanation:

<u>Perpendicular lines have negative reciprocal slopes, so the line is:</u>

  • y = -1/3x + b

<u>Finding the value of b, using the given point (-9, -2)</u>

  • -2 = -1/3*(-9) + b
  • -2 = 3 + b
  • b = -2 - 3
  • b = -5

<u>The line is</u>

  • y = -1/3x - 5
3 0
3 years ago
I forgot how to do this. Can someone tell me how?
Katyanochek1 [597]
Hey there, CrisisOnCats!

Absolute value is when any value that's inside the box, positive or negative, will always come out as positive.
For this one, you solve it as a normal equation, solving for x.
So, 8 = 5 - x
8-5 = 5-5 - x
3 = -x
x = -3
One value can be -3
To find the other value, just find any value that's equal to 8 when added or subtracted from 5, negative or positive.
We have 13 in this case.
5 - 13 is equals to -8 but since it's absolute value, it would be positive 8.
So, the answer is D

Thank you for using Brainly.
See you soon!
7 0
3 years ago
Read 2 more answers
Could you help me with these?
Sati [7]

Step-by-step explanation:

Molly should have multiplied three first so that it would have been

x + 6 + 3x + 12

4x + 18

Dylan did not add x to 5x

it should have been

6x - 12

Jose did not multiply 7 and -5

it should have been

x + 3 + 7x - 35

8x - 32

8 0
4 years ago
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