All categories

2 years ago

Need HELP!!! For all, I’m truly confused

Mathematics

1 answer:

irina1246 [14]2 years ago

6 0

Step-by-step explanation:

You need to know some geometry rules.

For example:

Angle sum of a triangle is equal to 180 degrees.

Straight line is equal to 180 degrees.

Other rules I have attached.

If you have any confusion over these I will be happy to answer your questions.

You might be interested in

Jerome takes a math course and a science course for summer school. For every 4 hours Jerome spends studying math, he studies sci

Vikentia [17]

Jerome studied 28 hours of Math

8 0

2 years ago

Can some please help me I'm struggling with this a lot

Eddi Din [679]

D. the angles are alternate which means that they will add up to 180 so the answer is D

hope this helps :)

6 0

2 years ago

Let X be a random variable with probability mass function P(X = 1) = 1 2 , P(X = 2) = 1 3 , P(X = 5) = 1 6 (a) Find a function g

Goryan [66]

The question is incomplete. The complete question is :

Let X be a random variable with probability mass function

P(X =1) =1/2, P(X=2)=1/3, P(X=5)=1/6

(a) Find a function g such that E[g(X)]=1/3 ln(2) + 1/6 ln(5). You answer should give at least the values g(k) for all possible values of k of X, but you can also specify g on a larger set if possible.

(b) Let t be some real number. Find a function g such that E[g(X)] =1/2 e^t + 2/3 e^(2t) + 5/6 e^(5t)

Solution :

Given :

$P(X=1)=\frac{1}{2}, P(X=2)=\frac{1}{3}, P(X=5)=\frac{1}{6}$

a). We know :

$E[g(x)] = \sum g(x)p(x)$

So, $g(1).P(X=1) + g(2).P(X=2)+g(5).P(X=5) = \frac{1}{3} \ln (2) + \frac{1}{6} \ln(5)$

$g(1).\frac{1}{2} + g(2).\frac{1}{3}+g(5).\frac{1}{6} = \frac{1}{3} \ln (2) + \frac{1}{6} \ln (5)$

Therefore comparing both the sides,

$g(2) = \ln (2), g(5) = \ln(5), g(1) = 0 = \ln(1)$

$g(X) = \ln(x)$

Also, $g(1) =\ln(1)=0, g(2)= \ln(2) = 0.6931, g(5) = \ln(5) = 1.6094$

b).

We known that $E[g(x)] = \sum g(x)p(x)$

∴ $g(1).P(X=1) +g(2).P(X=2)+g(5).P(X=5) = \frac{1}{2}e^t+ \frac{2}{3}e^{2t}+ \frac{5}{6}e^{5t}$

$g(1).\frac{1}{2} +g(2).\frac{1}{3}+g(5).\frac{1}{6 }= \frac{1}{2}e^t+ \frac{2}{3}e^{2t}+ \frac{5}{6}e^{5t}$$

Therefore on comparing, we get

$g(1)=e^t, g(2)=2e^{2t}, g(5)=5e^{5t}$

∴ $g(X) = xe^{tx}$

7 0

2 years ago

What is the y-intercept of a line that has a slope of 1/4 and passes through point (8, 3)?

lara31 [8.8K]

Y=mx + b
m=slope=1/4
(8,3) => 3 = 1/4 * 8 + b => b=1

y=1/4 x + 1

5 0

2 years ago

Read 2 more answers

Andrew spent $80 on travel last month.

xz_007 [3.2K]

195/30 * 80 = $520 spent on household bills last month

8 0

2 years ago