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3 years ago

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The cost of tuition at Johnson Community College is $190 per credit hour. Each student also has to pay $60 in fees. Write a line

ar equation model for this situation. Use C for the cost and x for the number of credit hours.

2 answers:

natita [175]3 years ago

7 0

<span>The cost of tuition at Johnson Community College is will be : </span>C = 190x + 60

mrs_skeptik [129]3 years ago

5 0

The answer is

C=f(x)=190x + 60,

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The mean cost of domestic airfares in the United States rose to an all-time high of $385 per ticket (Bureau of Transportation St

saveliy_v [14]

Answer:

a)0.067

b)0.111

c)0.612

d)$687.28

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $385

Standard Deviation, σ = $110

We are given that the distribution of domestic airfares is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

a) P(domestic airfare is $550 or more)

P(x > 550)

$P( x > 550) = P( z > \displaystyle\frac{550 - 385}{110}) = P(z > 1.5)$

$= 1 - P(z \leq 1.5)$

Calculation the value from standard normal z table, we have,

$P(x > 550) = 1 - 0.933 = 0.067= 6.7\%$

b) P(domestic airfare is $250 or less)

$P(x \leq 250) = P(z \leq \displaystyle\frac{250-385}{110}) = P(z \leq -1.22)$

Calculating the value from the standard normal table we have,

$P( x \leq 250) = 0.111 = 11.1\%$

c))P(domestic airfare is between $300 and $500)

$P(300 \leq x \leq 500) = P(\displaystyle\frac{300 - 385}{110} \leq z \leq \displaystyle\frac{500-385}{110}) = P(-0.77 \leq z \leq 1.04)\\\\= P(z \leq 1.04) - P(z < -0.77)\\= 0.851 - 0.239 = 0.612 = 61.2\%$

$P(300 \leq x \leq 500) = 61.2\%$

d) P(X=x) = 0.03

We have to find the value of x such that the probability is 0.03.

P(X > x)

$P( X > x) = P( z > \displaystyle\frac{x - 385}{110})=0.03$

$= 1 -P( z \leq \displaystyle\frac{x - 385}{110})=0.03$

$=P( z \leq \displaystyle\frac{x - 385}{110})=0.997$

Calculation the value from standard normal z table, we have,

$\displaystyle\frac{x - 385}{110} = 2.748\\x = 687.28$

Hence, the domestic fares must be $687.28 or greater for them to lie in the highest 3%.

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3 years ago

Use the Pythagorean Theorem to solve for the missing side length. Round to the nearest tenth if necessary.

Ede4ka [16]

Answer:

B= 6

Step-by-step explanation:

pythagorean theorem formula is a² + b² = c²

so: 8² + b² = 10²

then: 64 + b² = 100

subtract 64 from both sides to get b²= 36

square root 36 and you get 6 for b

answer: B= 6

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2 years ago

Phil collected data from several of his friends about the number of hours they spent sleeping and the number of hours they spent

Virty [35]

Answer:

B

Step-by-step explanation:

plz give brainliest i have never got it

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2 years ago

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Please answer this question only if you know the answer!! 85 points and brainliest!

Anuta_ua [19.1K]

Answer:

The game is not fair

Step-by-step explanation:

Let us find the sample space. It is the sum of the two spins

1+1 1+2 1+3 1+4

2+1 2+2 2+3 2+4

3+1 3+2 3+3 3+4

4+1 4+2 4+3 4+4

Adding

2,3,4,5

3,4,5,6

4,5,6,7

5,6,7,8

P(2) = 1/16

p(3) = 2/16

p(4) = 3/16

p(5) = 4/16

p(6) = 3/16

p(7) = 2/16

p(8) = 1/16

Player A gets a point if the sum is 6 or more

P (6,7,8) = P (6) + P(7) + P(8) since they are independent event

=( 3+2+1) /16 = 6/16 = 3/8

Player P gets a point if the sum is less than 6

P (2,3,4,5) =P (2) + P(3) + P(4 + P(5)

(1+2+3+4)/16 = 10/16= 5/8

Player B has a better chance of winning, so the game is not fair

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3 years ago

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Whats 2+2 I really need help. It's the hardest question I've ever seen. D:

GREYUIT [131]

Answer:

4

Step-by-step explanation:

Take 2 oranges, add 2 more

Now count them all together...

You have 4 oranges!!

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2 years ago