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Please help me with this homework equation I don’t understand and need help someone please do step by step

Answers

Answer 1

Answer:

Step-by-step explanation:

f'(x) = 6x-12

in vertex : f'(x) = 0

6x-12 =0 => x=2

f(2) = 3 ( 2² ) -12 (2 ) +1 = -11

vertex ( 2 , -11 )

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will give 5 stars and thanks for correct answer Richard starts high school every day at 7:45 A.M.. How many seconds is Richard in school each day of school dismissed at 2:15 P.M.

Answers

Richard spends 21,600 seconds at school each day.

There are two more assignments in your course before the semester ends, and if you get an A on at least one of them, you will get an A for the semester. Your "what-if" scenario looks like this:Event Probability

A on paper and A on presentation 0.25
A on paper only 0.10
A on presentation only 0.30
Do not get an A on either 0.35

Answer the following questions: (1 point each, except the last item, 2 points)

a. What is the probability of getting an A on the paper?
b. What is the probability of getting an A on the presentation?
c. What is the probability of getting an A in the course?
d. Are the grades on the assignments independent? Explain your answer

Answers

Answer:

Step-by-step explanation:

Hello!

Given the events:

A: "obtain an A in the paper assigment" ⇒ P(A)= 0.10

B: "obtain A in the presentation assigment" ⇒ P(B)= 0.30

Ac: "do not get an A in the paper assigment" ⇒ P(Ac)= 1 - 0.10= 0.9

Bc: "do not get an A in the presentation assigment" ⇒ P(Bc)= 1 - 0.30= 0.7

P(A∩B)= 0.25

P(Ac∩Bc)= 0.35

a. P(A)= 0.10

b. P(B)= 0.30

c. To get an A in the course you have to get an A in the paper and an A in the presentation, symbolically: P(A∩B)= 0.25

d. If the events A and B are independent, then the ocurrence of one of them doesn't affect the probability of the other ocurring, if this is so then:

P(A)= P(A/B)

$P(A/B)= (P(AnB))/(P(B)) = (0.25)/(030)= 0.83$

P(A) ≠ P(A/B) this means that "B" ocurring modifies the probability of ocurrence of A, i.e. both events are not independent.

I hope it helps!

Ralph and Melissa watch lots of videos. But they have noticed that they don't agree very often. In fact, Ralph only likes about 10% of the movies that Melissa likes, i.e., P(Ralph likes a movie|Melissa likes the movie) = .10 They both like about 37% of the movies that they watch. (That is, Ralph likes 37% of the movies he watches, and Melissa likes 37% of the movies she watches.) If they randomly select a movie from a video store, what is the probability that they both will like it? prob. =

Answers

Answer:

There is a 3.7% probability that they both will like it.

Step-by-step explanation:

We can solve this problem using the Bayes rule derivation from conditional probability.

Bayes rule:

What is the probability of B, given that A?

$P(A/B) = (P(A \cap B))/(P(A))$

In this problem, we have that:

$P(A/B)$ is the probability that Ralph likes the movie, given that Melissa likes. The problem states that this is 10%. So $P(A/B) = 0.1$

$P(A)$ is the probability that Melissa likes the movie. The problem states that $P(A) = 0.37$ .

If they randomly select a movie from a video store, what is the probability that they both will like it?

This is $P(A \cap B)$ .

$P(A/B) = (P(A \cap B))/(P(A))$

$P(A \cap B) = P(A)*P(A/B)$

$P(A \cap B) = 0.37*0.10 = 0.037$

There is a 3.7% probability that they both will like it.

Jack has a summer job caddying at a golf course. Jack earns $120a week. By rounding his weekly income to the nearest hundred
dollars, find a reasonable estimate for his total income during the
12 week summer.

A) $700
B) $800
C) $1200
D) $1700

Answers

1200 as you would round it down to 100 a week so you would do 100x12

Charissa is eating out with friends, and it is her turn to pay the gratuity. The bill for the food is 26.50. If she plans to tip the 20%, what should she pay?

Answers

If she plans to tip the 20%. Then the amount of tip will be $5.3.

What is the percentage?

The amount of any product is given as though it was a proportion of a hundred. The ratio can be expressed as a quarter of 100. The phrase % translates for one hundred percent. It is symbolized by the character '%'.

The percentage is given as,

Percentage (P) = [Final value - Initial value] / Initial value x 100

Charissa is eating out with friends, and it is her turn to pay the gratuity. The bill for the food is $26.50.

If she plans to tip the 20%. Then the amount of tip is given as,

Amount of tip = 20% of $26.50

Amount of tip = 0.20 x 26.50

Amount of tip = $5.3

If she plans to tip the 20%. Then the amount of tip will be $5.3.

More about the percentage link is given below.

brainly.com/question/8011401

#SPJ6

Answer: