1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
katrin [286]
3 years ago
12

7.

Mathematics
2 answers:
Nataly [62]3 years ago
7 0

Answer:

45

Step-by-step explanation:

f(×) = 15x

f(3) = 15(3)

= 45

give brainliest please I need it to level up

maksim [4K]3 years ago
7 0

Answer:

C. 3375

Step-by-step explanation:

c.3375  

since x is 3 you then type the equation like this 15^3 and multiply 15 three times  

...............................................................................................................................................

15^3

Given  :  for x =3.

To find : evaluate the function rule for the given value.

Solution : We have given  .

For x = 3.

Rule :  If  

Then   = 15*15*15.

 = 3375.

Therefore,  = 3375.

You might be interested in
About 8% of the U.S. population catches the flu each season. Assuming everyone has equal probability of catching the flu, about
avanturin [10]

Answer:

  • <u>The odds are 2 : 23, or about 0.09 :  1 (0.09 to 1).</u>

Explanation:

The <em>odds </em>of an event is the ratio of occurrence to non-occurrence of the event.

When you know the <em>probability</em> of an event, then you can calculate the odds by dividing the probability of occurence by the probability of non-occurrence.

Calling p the probability that an event will happen, 1 - p is the probability that it will not happen and the odds will be:

  • Odds = p / ( 1 - p)

You have p = 8% = 0.08, and 1 - p = 1 -0.08 = 0.92.

Therefore:

  • Odds = 0.08 / 0.92 = 8 : 92 = 2 : 23 ≈ 0.09 : 1 (0.09 to 1)

8 0
3 years ago
Helppp!!!! please!!!
Ulleksa [173]

Answer:

\boxed{Area = 32.5 mm^2}

Step-by-step explanation:

Area of Triangle = \frac{1}{2} (Base)(Height)

Where base = 13 mm, Height = 5 mm

Area = 1/2 (13)(5)

=> Area = 1/2 (65)

=> Area = 32.5 mm^2

5 0
4 years ago
Read 2 more answers
A right rectangle prism has a length of 5 cm a width of 4 cm and a height of 3 cm the dimensions of the prism are doubled what i
IRISSAK [1]

Answer: 376 cm^2

Step-by-step explanation:

First you would double all the dimensions:

l = 5 cm x 2 = 10 cm

w = 4 cm x 2 = 8 cm

h = 3 cm x 2 = 6 cm

The formula for finding the surface area of a rectangular prism is A=2(wl+hl+hw)

Substitute the values:

A=2(8*10+6*10+6*8)

Solve using PEMDAS:

A=2(80+60+48)

A=2(188)

A=376

Surface area is always in units^2:

376 cm^2

5 0
3 years ago
I need help with this question
Kaylis [27]

Answer:

a,

Step-by-step explanation:

3 0
3 years ago
Your flight has been delayed: At Denver International Airport, 85% of recent flights have arrived on time. A sample of flights i
Morgarella [4.7K]

Answer:

a) P(X = n) = (0.85)^{n}

b) P(X = x) = C_{n,x}.(0.85)^{x}.(0.15)^{n-x}

c)

P(X \geq x) = P(X = x) + P(X = x+1) + ... + P(X = n)

For each value, we use

P(X = x) = C_{n,x}.(0.85)^{x}.(0.15)^{n-x}

d) If x > E(X) + \sqrt{V(X)}, yes, otherwise no

Step-by-step explanation:

For each flight, there are only two possible outcomes. Either it arrived on time, or it did not. Flights are independent. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

A measure is said to unusual if it is more than 2.5 standard deviations from the mean.

85% of recent flights have arrived on time.

This means that p = 0.85

(a) Find the probability that all of the flights were on time.

This is P(X = n), in which n is the size of the sample studied.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = n) = C_{n,n}.(0.85)^{n}.(0.15)^{n-n}

P(X = n) = (0.85)^{n}

(b) Find the probability that exactly x of the flights were on time.

Exactly x of the flights: So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = x) = C_{n,x}.(0.85)^{x}.(0.15)^{n-x}

(c) Find the probability that x or more of the flights were on time.

This is

P(X \geq x) = P(X = x) + P(X = x+1) + ... + P(X = n)

For each value, we use

P(X = x) = C_{n,x}.(0.85)^{x}.(0.15)^{n-x}

(d) Would it be unusual for x or more of the flights to be on time?

If x > E(X) + \sqrt{V(X)}, yes, otherwise no

8 0
3 years ago
Other questions:
  • A spherical ball just fits inside a cylindrical can, 20 centimeters tall, with a diameter of 20 centimeters. Which expression gi
    10·1 answer
  • which of the following could be the ratio of the length of the longer leg of a 30-60-90 triangle to the length of its hypotenuse
    13·1 answer
  • 5. In the study, neither the subjects nor the experimenters interviewing the
    14·1 answer
  • Please please answer quick I really need them by tonight it’s 3 equations just click on the pick and you will see all 3 equation
    8·1 answer
  • PLEASE HELP 50 POINTS!!! Jordan is constructing the bisector of MN
    8·2 answers
  • Equation or expression ​
    6·2 answers
  • Can someone please help me :(((((((
    15·2 answers
  • Travis has $1,500 in a savings account. He deposits $75. How much interest will he earn after 2 years at a simple annual interes
    13·1 answer
  • 100x56 Show work for brsinly
    9·1 answer
  • A bag contains 5 blue marbles, 2 green marbles, and 3 yellow marbles. What is the probability of choosing one green marble and t
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!