3 years ago

Y is inversely proportional to x. When y=50, x=4 Work out y when x=8

Mathematics

1 answer:

notka56 [123]3 years ago

5 0

Answer:

100

Step-by-step explanation:

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An individual who has automobile insurance from a certain company is randomly selected. Let Y be the number of mov- ing violatio

olga2289 [7]

Answer:

a) $E(Y) = \sum_{i=1}^n Y_i P(Y_i)$

And replacing we got:

$E(Y) =0*0.60 +1*0.25 +2*0.1 +3*0.05 = 0.60$

b) $E(Y^2) =0^2*0.60 +1^2*0.25 +2^2*0.1 +3^2*0.05 = 1.1$

And then the expected value would be:

$E(100Y^2) = 100*1.1= 110$

Step-by-step explanation:

We assume the following distribution given:

Y 0 1 2 3

P(Y) 0.60 0.25 0.10 0.05

Part a

We can find the expected value with this formula:

$E(Y) = \sum_{i=1}^n Y_i P(Y_i)$

And replacing we got:

$E(Y) =0*0.60 +1*0.25 +2*0.1 +3*0.05 = 0.60$

Part b

If we want to find the expected value of $100 Y^2$ we need to find the expected value of Y^2 and we have:

$E(Y^2) = \sum_{i=1}^n Y^2_i P(Y_i)$

And replacing we got:

$E(Y^2) =0^2*0.60 +1^2*0.25 +2^2*0.1 +3^2*0.05 = 1.1$

And then the expected value would be:

$E(100Y^2) = 100*1.1= 110$

4 0

2 years ago

Is the relation a function why or why not???

Alexeev081 [22]

Answer:

No, it is not a function. The x repeats.

8 0

2 years ago

A triangle with vertices (−3, −3), (−6, 2), and (−1, 5) is what type of triangle? A) Equilateral B) Scalene C) Right D) Isoscele

aalyn [17]

<span>C) Right

https://www.desmos.com/calculator/vf2qksnpwe

</span>right triangle
<span>Proof: You can apply the Pythagorean theorem.</span>

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3 years ago

I'VE ASKED THIS 4 TIMES ALREADY. DOUBLE POINTS PLEASE HELP!!!

astraxan [27]

Answer:

y=-3x-14

Step-by-step explanation:

y=mx +c

m= 1/3

perp m= -3

goes through point (6,-4)

sub numbers

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2 years ago

Simplify(1\2)^4 1\16 1\8 1\4

tino4ka555 [31]

Step-by-step explanation:

(1\2)^4 x 1\16 x 1\8 x 1\4 [1/2^4=16]

1/16 x 1/512

=>1/2048

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2 years ago