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3 years ago

Helppppppppppppppppppppppppppp

Mathematics

1 answer:

OverLord2011 [107]3 years ago

6 0

The domain of the function f(x) is where the area under the square root (aka the radicand) is positive or zero. We have to write that the radicand is greater than or equal to zero, so

$\dfrac{1}{2}x-10 \geq 0$ .

C

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Rachel made 28 hats. Rachel made 7 times as many hats as Greg. Let n be the number of hats that Greg made.

il63 [147K]

Answer:

28/7=n is what I believe would be the answer

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3 years ago

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Assume that a policyholder is four times more likely to file exactly two claims as to file exactly three claims. Assume also tha

kykrilka [37]

Answer:

1.3125

Step-by-step explanation:

Given that our random variable $X$ follows a Poisson distribution $P(X=k)=\frac{\lambda^k e^-^p}{k!} \ \ \ \ \ \ \ \ p=\lambda$

Evaluate the formula at $k=2,3:$

$P(X=2)=0.5\lambda^2e^{-\lambda}\\\\P(X=3)=\frac{1}{6}\lambda^2e^{-\lambda}$

#since

$4P(X=2)=P(X=3);\\\\0.5\lambda^2e^{-\lambda}=4\times\frac{1}{6}\lambda^3e^{-\lambda}\\\\0.5\lambda^2=\frac{2}{3}\lambda^3\\\\0.75=\lambda$

The mean and variance of the Poisson distributed random variable is equal to $\lambda$ :

$\mu=\lambda=0.75\\\sigma ^2=\lambda=0.75$

#By property variance:

$\sigma ^2=V(X)=E(X^2)-(E(X))^2=E(X^2)\\\\E(X^2)=\sigma^2+\mu^2=0.75+0.75^2=1.3125$

The expectation is 1.3125

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3 years ago

Express the vector (4,-6) in terms of the standard unit vectors i and j

Aliun [14]

Four, -6 in terms of standard unit factors I NJ makes no sense

8 0

2 years ago

4. True or false: Lines, colors, and textures are often used to create shapes.

ioda

Answer:

true!

Step-by-step explanation:

because if we havent got lines, colors , and textures

how could shapes be created?

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1 year ago

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Find the length of the third side. If necessary, round to the nearest tenth.

joja [24]

Answer: 5

Step-by-step explanation:

use formula a^2 + b^2 = c^2

a^2 + 12^2 = 13^2

a^2 + 144 = 169

- 144 -144

a^2 = 25

sqrt sqrt

a = sqrt (25)

a = 5

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3 years ago