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2 years ago

PLEASE HELPPPPP..........!!!

Mathematics

1 answer:

alisha [4.7K]2 years ago

7 0

I can’t see it well...like it’s blurring

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Find all the values of x where the tangent line is horizontal. 2x^3+36x^2+192x+12

Afina-wow [57]

At x = -4 and -8
Take the derivative of the given equation to find rate of change of the graph.
f'(x) = 6x^2 + 72x + 192
At a horizontal tangent, f'(x) = 0, so set the equation equal to 0 and solve. Eventually you get x = -4 and -8

3 0

2 years ago

A literature professor decides to give a 10-questiontrue-false quiz to determine who has read an as-signed novel. She wants to c

Darya [45]

Answer:

The teacher should set the score 7 as the lowest passing grade.

Step-by-step explanation:

Let X = number of correct guesses.

All the questions are of true-false format.

The probability of getting a correct answer is, p = 0.50.

The total number of questions is, n = 10.

The random variable X follows a Binomial distribution with parameters n = 10 and p = 0.50.

The probability mass function of X is:

$P(X=x)={10\chose x}0.50^{x}(1-0.50)^{10-x};\ x=0,1,2,3...$

Now the teaches chose the grading scheme such that the probability of passing a student who guesses on every question is less than 0.05.

Then the probability of failing such a students is at least 1 - 0.05 = 0.95.

Compute the probability distribution of X.

Consider the probability distribution attached below.

The value of x for which P (X ≤ x) is at least 0.95 is, x = 7.

So the teacher should set the score 7 as the lowest passing grade.

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2 years ago

For brainiest:):):):):):):):):):):)

Sergeu [11.5K]

Answer:

37 YD

Step-by-step explanation:

you just make the squares there own thingy then you find the area of both and add

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3 years ago

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If the vertex of a parabola is (-7,-1) , what is the axis of symmetry

jekas [21]

6447765 guitar stay ya diggg

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2 years ago

Guadalupe can do a job in 15 hours. If she works with lan, together they can get the job done in 10 hours. How long would it tak

krok68 [10]

Answer:

30 hours

Step-by-step explanation:

The equation we use is 1/15 + 1/x = 1/10. X being the amount of time it takes Ian alone. X works out to 30 hours which is the answer

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2 years ago