3 years ago

Which graph shows the linear equation y = -x + 2?

Mathematics

1 answer:

S_A_V [24]3 years ago

6 0

Answer:

graph Q shows that. it starts at y intercept 2 and goes down by 1

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Suppose that X1 and X2 are independent random variables each with a mean μ and a variance σ^2. Compute the mean and variance of

Deffense [45]

Mean:

E[Y] = E[3X₁ + X₂]

E[Y] = 3 E[X₁] + E[X₂]

E[Y] = 3µ + µ

E[Y] = 4µ

Variance:

Var[Y] = Var[3X₁ + X₂]

Var[Y] = 3² Var[X₁] + 2 Covar[X₁, X₂] + 1² Var[X₂]

(the covariance is 0 since X₁ and X₂ are independent)

Var[Y] = 9 Var[X₁] + Var[X₂]

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Var[Y] = 10σ²

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3 years ago

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hichkok12 [17]

Step-by-step explanation:

x-5x-6=0

x-5x=6+0

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x=6

x=3

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3 years ago

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Nesterboy [21]

Answer: AC= 85 BC= 68 and AB=65 The sides of the triangle are all of different lengths which means that ABC is a scalene triangle.

Step-by-step explanation: A scalene triangle only has different lengths! :)

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3 years ago

The area of the trapezoid is 9 square centimeters.

Lana71 [14]

Answer:

Height : 3 cm

Step-by-step explanation:

The formula for a trapezoid is

<u> a+b</u> ×height

Rearrange for formula :

$2 \times \frac{area}{ base + base }$

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kumpel [21]

I believe the answer is D

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