3 years ago

If there are 45000 seats and 5/8 of them are used how many are left

Mathematics

1 answer:

KATRIN_1 [288]3 years ago

8 0

Are there any answer choices?

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x P(x) 0 0.25 1 0.3 2 0.1 3 0.35 Find the standard deviation of this probability distribution. Give your answer to at least 2 de

barxatty [35]

Answer:

The standard deviation of this probability distribution is 1.2.

Step-by-step explanation:

We have that:

P(X = 0) = 0.25

P(X = 1) = 0.3

P(X = 2) = 0.1

P(X = 3) = 0.35

Mean:

Each value multiplied by its probability. So

$M = 0*0.25 + 1*0.3 + 2*0.1 + 3*0.35 = 1.55$

Variance:

Sum of the squares of the values subtracted from the mean, and multiplied by its probability.

$V = 0.25*(0-1.55)^2 + 0.3*(1-1.55)^2 + 0.1*(2-1.55)^2 + 0.35*(3-1.55)^2 = 1.4475$

Standard deviation:

Square root of the variance. So

$S = \sqrt{V} = \sqrt{1.4475} = 1.2$

The standard deviation of this probability distribution is 1.2.

6 0

3 years ago

\3 units

maxonik [38]

Base of prism is seemed to be a triangle

Base=B=3
Height of base=H=6units
Height of prism=8

Area of base=

$\\ \sf\longmapsto \dfrac{1}{2}BH$

$\\ \sf\longmapsto \dfrac{1}{2}(3)(6)=3(3)=9units^2$

Now

Volume=V

$\\ \sf\longmapsto V=9(8)=72units^3$

3 0

2 years ago

The sides od a triangle are in the ratio3:4:5 &uts perimeter 144 cm .find tye area

enyata [817]

<h2><em><u>Answer : </u></em>The area of triangle is 864 cm² and the height corresponding to the longest side is 28.8 cm.</h2><h2 />

5 0

3 years ago

If a jogger runs a 10-kilometer race in 60 minutes, what is her average speed?

STALIN [3.7K]

Answer:

Step-by-step explanation:

Speed = distance/ time

=10km/ 1hr(60mins)

= 10km/ 1hr

=10km/hr

3 0

3 years ago

Tom drove 408 miles using 16 gallons of gas. at this rate, how many miles would he drive using 11 gallons of gas?

Rudik [331]

(11x408) / 16 = 280.5 miles on 11 gal of gas

8 0

3 years ago