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
Vsevolod [243]
3 years ago
13

According to the Harris Poll, 70 % of dog owners buy their dogs holiday presents. Suppose you select a random sample of 25 dog o

wners from among the population of 30 dog owners at the dog park. Let X be a random variable equal to the number of dog owners who buy their dogs holiday presents.

Mathematics
1 answer:
Lana71 [14]3 years ago
7 0

The concluding part is missing in the question and it says we should find the probability that 2 of the people selected cook meals for their dogs

Answer:

P(x2) = 0.1857

Step-by-step explanation:

N = 30; since there are 30 people that own dogs

k = 21; since there are 70% of dog owners who buy gifts for their dogs

n = 25; since we randomly select 25 people among the dog owners

x = 2; since we randomly select 2 people who cook meals for their dogs

Therefore, for clarity sake the solution is in the attachment ;

And the probability is 0.1857

You might be interested in
(40-3x7-9-6x2]+ 4+19<br> I need the answer to this
Schach [20]

-3x7=-21

6x2= -12

40+21-9+12

61-21

40+4+19

44+19= 63

5 0
3 years ago
Given the functions: f(x) = x^2-9 and g(x) = 3 what is (f/g)(x)? A. x-3 B. x-9 C. x+3 D. x+9
uysha [10]

Answer:

f + g)(x) = f (x) + g(x)

= [3x + 2] + [4 – 5x]

= 3x + 2 + 4 – 5x

= 3x – 5x + 2 + 4

= –2x + 6

(f – g)(x) = f (x) – g(x)

= [3x + 2] – [4 – 5x]

= 3x + 2 – 4 + 5x

= 3x + 5x + 2 – 4

= 8x – 2

(f × g)(x) = [f (x)][g(x)]

= (3x + 2)(4 – 5x)

= 12x + 8 – 15x2 – 10x

= –15x2 + 2x + 8

\left(\small{\dfrac{f}{g}}\right)(x) = \small{\dfrac{f(x)}{g(x)}}(

g

f

)(x)=

g(x)

f(x)

= \small{\dfrac{3x+2}{4-5x}}=

4−5x

3x+2

My answer is the neat listing of each of my results, clearly labelled as to which is which.

( f + g ) (x) = –2x + 6

( f – g ) (x) = 8x – 2

( f × g ) (x) = –15x2 + 2x + 8

\mathbf{\color{purple}{ \left(\small{\dfrac{\mathit{f}}{\mathit{g}}}\right)(\mathit{x}) = \small{\dfrac{3\mathit{x} + 2}{4 - 5\mathit{x}}} }}

3 0
3 years ago
Least common multiple of 5, 25, 65
Lelechka [254]
325 is the answer to this equation.
7 0
3 years ago
Find the area of △LKJ.
nirvana33 [79]

Answer:

A=600\: u^{2}

<u>The correct answer is letter c.</u>

Step-by-step explanation:

The area equation of a triangle is given by:

A=\frac{bh}{2}  (1)

Where:

b is the base

h is the height

Let's find first the angle MJK (α), using the tangent definition.

tan(\alpha)=\frac{24}{32}

\alpha=tan^{-1}(\frac{24}{32})

\alpha=36.9^{\circ}

Now, if α = 37° then β (angle JLK) must be:

37^{\circ} + \beta + 90^{\circ}=180^{\circ}

\beta=53^{\circ}

Now, we can find the distance ML using again the tangent definition:

tan(\beta)=\frac{24}{ML}

ML=\frac{24}{tan(53)}

ML=18

The base of the triangle LKJ will be:

b=32+ML=32+18=50

Therefore, using equation (1) the area of △LKJ will be:

A=\frac{50*24}{2}

A=600\: u^{2}

The correct answer is c.

I hope it helps you!

5 0
3 years ago
Pls help me find the equation and do the table
Goryan [66]

Check the picture below.

$20 when the hours is 0, is pretty much just a base fee Andy has before doing any on location hours of work, namely is a fee the customer owes for the service before anything else, usually is for paperwork required for hte contract.

4 0
3 years ago
Other questions:
  • I don't know 8÷85= and I need help
    9·2 answers
  • The length of a rectangle is twice its width. Find its area, if its perimeter is 7 1/3 cm.
    8·1 answer
  • Suppose you have this array of five integers: int[] list {2, 5, 4, 8, 3}. if a bubble sort is being used, which index of the arr
    15·1 answer
  • A sugar mixture has 3 parts water and 2 parts sugar. Suppose the chef adds one more part to each. What is the new ratio of sugar
    10·2 answers
  • What is 394839348 + 3948593992934
    11·2 answers
  • The length of a rectangle is 4 cm less then twice it’s width the perimeter of the rectangle is 34 cm. What are the dimensions of
    11·1 answer
  • Dentify the transformation that carries the figure onto itself.
    7·2 answers
  • Which number sentence does the following number line represent A. 3+2=5 B. -3+5=2 C. 2+(-3)=5 D. 2+(-5)=-3
    10·1 answer
  • For questions 9 and 11, solve for the remaining angles.
    14·1 answer
  • Which of the following equations describes the line shown below? Check all
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!