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2 years ago

What is the equation of the line in slope-intercept form?

Mathematics

1 answer:

Andru [333]2 years ago

8 0

Answer:

$consider \: (0,4) \: and \: (-3,0) \\ gradient \: \: m = \frac{( - 3 - 0)}{(0 - 4)} \\ m = \frac{3}{4} \\ from \: y = mx + c \\ for \: (-3,0) : \: 0 = \frac{3}{4} \times - 3 + c \\ c = \frac{9}{4} \\ therefore \\ y = \frac{3}{4} x + \frac{9}{4 } \\ 4y = 3x + 9$

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What is the radius of the circle?

natima [27]

Answer: The circumference of a circle is equal to Pi π times the diameter d . Since the diameter d is equal to 2 times the radius r , the formula for circumference using radius is 2πr 2 π r .

Step-by-step explanation:

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2 years ago

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Murljashka [212]

Answer:

$\boxed{Option \ C}$

Step-by-step explanation:

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3 years ago

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. Let X and Y be random variables of possible percent returns (0%, 10%,

bazaltina [42]

(a) The marginal distribution of X is

Pr(X = x) = ∑ Pr(X = x, Y = y)

… = 0.0625 + 0.0625 + 0.0625 + 0.0625

… = 0.25

That is, the first equality follows from the law of total probability, with the sum taken over y from {0, 5, 10, 15}. Each probability Pr(X = x, Y = y) is given in the table to be 0.0625.

Similarly, the marginal distribution of Y is

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(b) Yes, they're independent because

Pr(X = x, Y = y) = 0.0625,

and

Pr(X = x) Pr(Y = y) = 0.25 • 0.25 = 0.0625.

E[X] = ∑ x Pr(X = x)

… = 0.25 ∑ x

… = 0.25 (0 + 5 + 10 + 15)

… = 7.5

and you would find the same mean for Y,

E[Y] = 7.5

The variance of X is

V[X] = E[X^2] - E[X]^2

… = (∑ x^2 Pr(X = x)) - 7.5^2

… = 0.25 (∑ x^2) - 56.25

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and similarly,

V[Y] = 31.25

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3 years ago

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katrin2010 [14]

Answer: C. x=0, y=2, z=5

Step-by-step explanation:

you can just plug in the numbers and see which ones work

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3 years ago

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galina1969 [7]

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