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3 years ago

4 (2y+y) - 6 (4y+3y)

Mathematics

1 answer:

In-s [12.5K]3 years ago

7 0

I hope I help you out

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A fair six-sided die, with sides numbered 1 through 6, will be rolled a total of 15 times. Let x¯1 represent the average of the

Anna35 [415]

Answer:

option B

Step-by-step explanation:

$P(x =x) [{\frac{1}{6} ;x =1,2,3...6]$

$E (x) = \frac{6+1}{2} =\frac{7}{2} =3.5\\\\E(x)=3.5$

Given random experiment of tossing of 6 sided dice is follow above distribution

Therefore, suppose x₁, x₂ ...x₁₀ are 10 independent and indentical random variable which represent first 10 rolls

Average of first 10 rows equals

$\bar x_1 =\frac{ \sum ^{10}_{i=1}xi}{10}$

$E(\bar x_1)=\frac{ \sum ^{10}_{i=1}E(x_1)}{10} \\\\=\frac{10(3.5)}{10} \\\\=3.5\\\\E(\bar x_1) = 3.5----(1)$

now suppose ,

x₁₁,x₁₂, ...x₁₅ are 5 independent and identical random variable which represent last 5 roll

average of last 5 roll is

$E(\bar x_2)= \frac{ \sum ^{5}_{i=1}xi}{5} \\\\= \frac{5 \times(3.5)}{5} \\\\=3.5$

Therefore, $\bar x_1 - \bar x_2$

3.5 - 3.5 = 0

5 0

3 years ago

What is the area of a square with a side of 4square root 11 mm?

JulijaS [17]

Answer:

176 mm²

Step-by-step explanation:

The area of a square is s² , where s is the measure of the side, thus

area = (4 $\sqrt{11}$ )²

= 4 × 4 × $\sqrt{11}$ × $\sqrt{11}$ = 16 × 11 = 176 mm²

4 0

3 years ago

I need this answer plz and thx

mote1985 [20]

Answer:

36.4/26 = 1.4

Step-by-step explanation:

5 0

3 years ago

The slope is 1/3, the y-intercept is -4. How would your write this as an equation?

forsale [732]

Y=1/3x-4
<span>y = mx + b
m is ur slope
b is ur y-intercept
just plug in the numbers w the letters

</span>

7 0

4 years ago

Write as a monomial in standard form:f (–x^2y^3m)^5

laiz [17]

Answer:

Using the formula, write in standard form.

f,−x10y15m5

Step-by-step explanation:

7 0

4 years ago