50 points and brain thing!!! Please show proof for the question above

I need help on this question can someone please help me?

Svetllana [295]

I really hate these algebra problems pretending to be geometry.

Anyway angles B and D are congruent in a parallelogram. Geometry part done.

4n - 2 = 2n + 32

2n = 34

n = 17

Answer: 17, which is the 3rd choice

3 0

3 years ago

Read 2 more answers

Help me on my geometry hw it’s due in 25 minutes

icang [17]

Answer:

now just half the first triangals answers

Step-by-step explanation:

x =21

y=24

TH=24 PQ=12

RH=24 NQ=12

RT=21 NP=10.5

>T=80 >P=80

>H=20 >Q=20

>R=80 >N=80

8 0

3 years ago

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Suppose X has an exponential distribution with mean equal to 23. Determine the following:

e-lub [12.9K]

Answer:

a) P(X > 10) = 0.6473

b) P(X > 20) = 0.4190

c) P(X < 30) = 0.7288

d) x = 68.87

Step-by-step explanation:

Exponential distribution:

The exponential probability distribution, with mean m, is described by the following equation:

$f(x) = \mu e^{-\mu x}$

In which $\mu = \frac{1}{m}$ is the decay parameter.

The probability that x is lower or equal to a is given by:

$P(X \leq x) = \int\limits^a_0 {f(x)} \, dx$

Which has the following solution:

$P(X \leq x) = 1 - e^{-\mu x}$

The probability of finding a value higher than x is:

$P(X > x) = 1 - P(X \leq x) = 1 - (1 - e^{-\mu x}) = e^{-\mu x}$

Mean equal to 23.

This means that $m = 23, \mu = \frac{1}{23} = 0.0435$

(a) P(X >10)

$P(X > 10) = e^{-0.0435*10} = 0.6473$

So

P(X > 10) = 0.6473

(b) P(X >20)

$P(X > 20) = e^{-0.0435*20} = 0.4190$

So

P(X > 20) = 0.4190

(c) P(X <30)

$P(X \leq 30) = 1 - e^{-0.0435*30} = 0.7288$

So

P(X < 30) = 0.7288

(d) Find the value of x such that P(X > x) = 0.05

So

$P(X > x) = e^{-\mu x}$

$0.05 = e^{-0.0435x}$

$\ln{e^{-0.0435x}} = \ln{0.05}$

$-0.0435x = \ln{0.05}$

$x = -\frac{\ln{0.05}}{0.0435}$

$x = 68.87$

5 0

3 years ago

as a part of its diet, a pacific seahorse eats about 56 shrimp per week.It eats the same amount each day

Furkat [3]

Answer:

The Pacific seahorse eats 8 shrimp per day

Step-by-step explanation:

The complete question is

As a part of its diet, a Pacific seahorse eats about 56 shrimp per week. It eats the same amount each day.

a) How much shrimp does the Pacific seahorse eat per day?

Complete the statement with the unit rate.

The Pacific seahorse eats _____ shrimp per day.

Part a) How much shrimp does the Pacific seahorse eat per day?

Let

x ---> the number of shrimp that the Pacific seahorse eats per day

we know that

The number of shrimp that the Pacific seahorse eats per day, multiplied by the number of days in a week, must be equal to 56 shrimp

$1\ week=7\ days$

so

The linear equation that represent this situation is equal to

$7x=56$

solve for x

Divide by 7 both sides

$x=8\ shrimp$

therefore

The Pacific seahorse eats 8 shrimp per day

5 0

3 years ago

A bag contains 9 marbles: 2 are green, 4 are red, and 3 are blue. Mary chooses a marble at random, and without putting it back,

amm1812

There is a 2/9 chance that both marbles drawn will be blue.

7 0

3 years ago