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3 years ago

Yeah anyone else bored while ur in school so ur browsing brainly??

Mathematics

1 answer:

Margarita [4]3 years ago

8 0

Answer:

I'm Not bored im currently Dying while in school :)

Step-by-step explanation:

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Two different plants grow each year at different rates, which are represented by the functions f(x) = 4xand g(x) = 5x + 2. What

Dominik [7]

The question is related to inequalities . Here we have to find the value of x for which f(x) is greater than g(x) . That is

f(x)>g(x)

Substituting the values of f(x) and g(x)

4x > 5x +2

Now we need to keep x terms on same side. So we need to move 5x to the left side by subtracting 5x from both sides. That is,

4x-5x>5x+2-5x

-x>2

Now we need to get rid of minus sign and for that we need to multiply by minus one to both sides which change the sign of the inequality. That is ,

x <-2

5 0

3 years ago

An airline charges the following baggage fees: $25 for the first bag and $35 for the second. Suppose 54% of passengers have no c

Triss [41]

Answer:

(a) The average baggage-related revenue per passenger is $15.70.

(b) The standard deviation of baggage-related revenue is $19.95.

Step-by-step explanation:

Let the random variable <em>X</em> represent the baggage-related revenue per passenger.

It is provided that the baggage fees is $25 for the first bag and $35 for the second.

The probability model is:

X : 0 25 60

P (X) : 0.54 0.34 0.12

(a)

Compute the average baggage-related revenue per passenger as follows:

$E(X)=\sum {X\times P (X)}$

$=(0\times 0.54)+(25\times 0.34)+(60\times 0.12)\\\\=0+8.50+7.20\\\\=15.70$

Thus, the average baggage-related revenue per passenger is $15.70.

(b)

Compute the standard deviation of baggage-related revenue as follows:

$E (X^{2})=\sum X^{2}\times P(X)}\\\\=(0^{2}\times 0.54)+(25^{2}\times 0.34)+(60^{2}\times 0.12)\\\\=0+212.50+432\\\\=644.5\\$

$SD(X)=\sqrt{E(X^{2})-(E(X))^{2}}$

$=\sqrt{644.5-(15.7)^{2}}\\\\=19.950188\\\\\approx 19.95$

Thus, the standard deviation of baggage-related revenue is $19.95.

(c)

Compute the expected revenue for 120 passengers as follows:

$E(R)=n\times E(X)$

$=120\times 15.7\\\\=1884$

Thus, the expected revenue for 120 passengers is $1,884.

8 0

4 years ago

Need help will give 15 points!!

Marta_Voda [28]

Answer:cool

Step-by-step explanation:

8 0

3 years ago

Choose the graph that represents the equation y=x-2

amid [387]

Step-by-step explanation:

The choices are not given but the graph looks like the above picture.

8 0

2 years ago

Read 2 more answers

Please help and explain if you can

finlep [7]

You're pretty much screwed

4 0

4 years ago