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Blizzard [7]
2 years ago
5

Plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Mathematics
1 answer:
Feliz [49]2 years ago
3 0

Answer:

a) x(x-2)

b) 6x(2x+2)

dont know c and d sorry

Step-by-step explanation:

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HELP HELP HELP HELP PLEASEEE
Sphinxa [80]

The valid probability distributions are the ones in options C and D.

<h3>Which of the following are valid probability distributions?</h3>

For discrete random variables with probabilities p₁, p₂, ..., pₙ, there are two rules:

  • All of these probabilities are numbers between 0 and 1.
  • p₁ + p₂ + ... + pₙ = 1.

So, for the first rule we can discard the first option, where we have negative probabilities.

To check the other 4 options, just add the probabilities and see if the addition gives 1.

The options that add up to 1 are C and D, so these two are the correct options.

D: 1/5 + 1/10 + 1/10 + 1/10 + 1/5 + 1/10 + 1/10 + 1/10 = 1

C: 1/6 + 1/6 + 1/6 + 1/6 + 1/6 + 1/6 = 1

If you want to learn more about probability:

brainly.com/question/25870256

#SPJ1

3 0
1 year ago
URGENT PLEASE ANSWER THIS MATH QUESTION
Roman55 [17]

Answer:

10.7

Step-by-step explanation:

You set up the proportion like this:

\frac{x}{8} =\frac{4}{3}

When you solve for x you get

x=\frac{32}{3}=10.66666667

x=10.7 rounded to the nearest tenth

6 0
3 years ago
A beverage company surveyed 450 adults to determine the demand for summer drinks.
Ganezh [65]

Answer:

174 people preferred drinking water.

Step-by-step explanation:

Given that:

A total of 450 males and females were surveyed.

203 were males.

Number of females = 450 - 203 = 247 females

247 females were surveyed.

Now, we will find the number of females who prefer water.

Let,

x be that number.

Total number of females = Soda + Iced tea + Lemonade + Water

247 = 28 + 44 + 67 + x

247 = 139 + x

247-139 = x

x = 108

Number of people who prefer water = 108 + 66 = 174

Hence,

174 people preferred drinking water.

3 0
3 years ago
Write equation for the line that is perpendicular to the y axis and passing through (5,1)
Alla [95]

Answer:

Step-by-step explanation:

A line perpendicular to the y-axis, which is vertical, is a line that is horizontal. Perfectly horizontal lines always have a slope of 0. Thus, the equation of the line perpendicular to the one given and passing through the given point (5, 1) is

y - 1 = 0(x - 5) and

y - 1 = 0x - 0 and

y - 1 = 0 so

y = 1 is the equation you're looking for.

3 0
3 years ago
Last week at a​ festival, a man sold 5 times as many​ tie-dyed T-shirts as​ silk-screened shirts. He sold 240 shirts altogether.
Alja [10]
Let silk shirts be x,so tie dye shirts 5x.
X+5x=240
6x=240
X=40
So 5x=200
3 0
3 years ago
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