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3 years ago

15

OK PLS HELP ME AND MY FRIEND REALLY NEED IT THE FIRST PERSON THAT ANSEWRS WILL GET BRAINLEST AND I WILL LITTERLY LOVE YOU AND WO

RSHIP YOU NO JOKE

1 answer:

Andru [333]3 years ago

3 0

Answer:

x=15

f= -3

h= -7/2

Step-by-step explanation:

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A random variable x takes four possible values, 0, 2, a, and b, where a and b are unknown numbers. if pr[x = 0] = 0.2, pr[x=2] =

Alexus [3.1K]

$\displaystyle\sum_{x\in\{0,2,a,b\}}\mathbb P(X=x)=1$
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$0\mathbb P(X=0)+2\mathbb P(X=2)+a\mathbb P(X=a)+b\mathbb P(X=b)=2.8$
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$a+b=6\implies0.3a+0.1b=0.2a+0.1(6)=2$
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7 0

3 years ago

Mathematics, what's the answer?

sleet_krkn [62]

Answer:

-5

Step-by-step explanation:

The answer is -5 because when you take 3+9 you get 12 and then it says divide that by 3 which then equals 4 then subtract it by 9 which gives you the answer -5.

Hope DaSS HulP,

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3 years ago

In a 30-60-90 triangle, what is the length of the hypotenuse when the shorter leg is 5 cm?

zheka24 [161]

Shorter Leg=x

Hypotenuse=2x

Shorter Leg=5cm

Hypotenuse= 10cm

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4 years ago

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kondor19780726 [428]

1... the wording is a little confusing.
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4 years ago

Subtract. –21 – (–13)<br> a. –34<br> b. –8<br> c. 8<br> d. 34

Angelina_Jolie [31]

-21 - (-13)

-21 + 13

= -8

The answer B)

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4 years ago