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PSYCHO15rus [73]
2 years ago
15

Determine whether the following is a probability distribution. If not, identify

Mathematics
1 answer:
shutvik [7]2 years ago
4 0

Due to a negative value of P(X = x), it is found that the following is not a probability distribution.

---------------------

A sequence (x, P(X = x)) is a probability distribution if:

  • The sum of all values of P(X = x) equals 1.
  • There is no negative values of P(X = x).

In this problem, P(X = 2) is negative, thus, it is not a probability distribution.

A similar problem is given at brainly.com/question/24224213

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HELP ASAP PLEASE <br> Find the area of the figure.
WITCHER [35]

Answer:

39.82

Step-by-step explanation:

to find the entire area of the figure, you'll have to split it up into two parts:

   a. triangle

   b. semi-circle

therefore, the formula for the area of a triangle is 1/2(base)(height). in simpler terms, it means to multiply 1/2 by the base and the height. in this case, multiply 1/2 x 5 x 12, which gives you 60/2, which ultimately gives you 30.

to find the area of the semi circle, use the area formula for a circle and divide the area by 2. the formula is: πr^{2}. so, plug in your lengths. this gives you, π(5)^2. divide this by two. you should get an answer of 9.82

finally, add your two areas (30+9.82), which equals 39.82

hope this helps!<3

4 0
2 years ago
For a project in his Geometry class, Mamadou uses a mirror on the ground to measure the height of his school's football goalpost
andreev551 [17]

Answer:

Height of the goalpost is 9.25 m.

Step-by-step explanation:

As per the rule of reflection in physics,

Angle of incidence = Angle of reflection

As we can see in the picture attached, both the angles (θ) are equal.

m∠ACB = m∠ECD = 90° - θ

m∠ABC = m∠ADC = 90°

Therefore, both the triangles ΔABC and ΔEDC will be similar.

And by the property of similar triangles, their corresponding sides will be proportional.

\frac{AB}{ED}= \frac{CB}{CD}

\frac{1.75}{ED}=\frac{2.6}{13.75}

ED = \frac{1.75\times 13.75}{2.6}

ED = 9.25 m

Height of the goalpost is 9.25 m.

4 0
2 years ago
Write an e explicit formula for an, the nth term of the sequence 22, 19, 16, ...<br>​
alexira [117]

Answer:

a_{n} = 22 + (-3)(n - 1)

Step-by-step explanation:

The first term is 22. It looks like each term after that is the term before, plus a negative 3.

a-sub-one  = 22

common difference = d= -3

Formula for a_{n}:

a_{n} = 22 + (-3)(n - 1) = 25 - 3n

4 0
3 years ago
Find the area for each figure to the nearest tenth
ivann1987 [24]
10. 105 in
11.50 m
Explanation:
8 0
3 years ago
X+ y + x + y + 3(y + 5)?
Anastasy [175]

Answer:

2x + 5y +15

Step-by-step explanation:

x + x + y + y + 3y + 15

2x + 2y +3y +15

2x +5y + 15

7 0
3 years ago
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