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
Rom4ik [11]
3 years ago
12

Ms. allegre has 20 students in her class.There are 8 female students ,and the rest of the class are male . Which of these repres

ents the fraction of the students who are female ? A. 8/24 B. 8/16 C.24/8 D.16/24
Mathematics
1 answer:
Volgvan3 years ago
3 0

Answer:

all these answer choices are wrong? if there are 8 female students and 20 students total then it will be 8/20 which can be simplified to 4/10 or 2/5.  

Step-by-step explanation:

8 females/ 20 students

You might be interested in
What are the vertex, axis of symmetry, domain and range of the function:
DiKsa [7]
Y=(-x*x)-4x+3
y=-(x^2+4x-3)
4+y=-(x^2+4x+4)+3
y+4=-(x-2)^2.) +3
-4. -4
y=-((x-2)^2)-1

Answers:
Vertex: (2,-1)
AOS:x = 2
Domain: All Real Numbers
Range:[-1,Infinity)
3 0
2 years ago
In the Ardmore Hotel, 20 percent of the guests (the historical percentage) pay by American Express credit card. (a) What is the
xxMikexx [17]

Answer:

(a) The expected number of guests until the next one pays by American Express credit card is 4.

(b) The probability that the first guest to use an American Express is within the first 10 to checkout is 0.0215.

Step-by-step explanation:

The random variable <em>X</em> can be defined as the number of guests until the next one pays by American Express credit card

The probability that a guest paying by American Express credit card is, <em>p</em> = 0.20.

The random variable <em>X</em> follows a Geometric distribution since it is defined as the number of trials before the first success.

The probability mass function of <em>X</em> is:

P(X=x)=(1-p)^{x}p;\ x=0,1,2,3...,\ 0

(a)

The expected value of a Geometric distribution is:

E(X)=\frac{1-p}{p}

Compute the expected number of guests until the next one pays by American Express credit card as follows:

E(X)=\frac{1-p}{p}

         =\frac{1-0.20}{0.20}

         =4

Thus, the expected number of guests until the next one pays by American Express credit card is 4.

(b)

Compute the probability that the first guest to use an American Express is within the first 10 to checkout as follows:

P(X=10)=(1-0.20)^{10}\times0.20

                 =0.1073741824\times 0.20\\=0.02147483648\\\approx0.0215

Thus, the probability that the first guest to use an American Express is within the first 10 to checkout is 0.0215.

3 0
3 years ago
Need answers plz help
stiv31 [10]
You can use the factors of the volumes 24, 27 and 48:
For example:
8 by 3 by 1 is a total volume of 24
or if you know that 4 times 2 is 8:
4 by 2 by 2
and so on
3 0
3 years ago
the height of the snow was 84 inches in the beginning of the week. it melts at a rate of 0.15 inches per hour. how many hours wo
lakkis [162]

Answer:

It takes 147 hours for the snow to reach 62 inches.

Step-by-step explanation:

Given:

Height of the snow at the beginning  = 84 inches

Rate at which the snow melts = f 0.15 inches per hour

To Find:

The time taken for the  snow to reach 62 inches = ?

Solution:

Let the time taken to reach 62 inches be x

Then according to the question,

Total height of the snow - (rate of melting)(x) = 62 inches

On substituting the values,

84 - (0.15)(x) = 62

84 - 0.15x = 62

- 0.15x = 62 - 84

- 0.15x = -22

0.15x = 22

x = \frac{22}{0.15}

x= 146.6

x = 147

7 0
3 years ago
2p/9 + 5p/18 - 5/6 = 2/3 + p/12 + 1/6
mezya [45]
\frac{2p}{9}+\frac{5p}{18}-\frac{5}{6}=\frac{2}{3}+\frac{p}{12}+\frac{1}{6}\ \ \ |Multiply\ by\ 36\\\\&#10;4*2p+2*5p-5*6=12*2+3*p+6*1\\\\&#10;8p+10p-30=24+3p+6\\\\&#10;18p-30=3p+30\ \ \ |Subtract\ 3p\\\\&#10;15p-30=30\ \ \ |Add\ 30\\\\&#10;15p=60\ \ \ |Divide\ by\ 15\\\\&#10;\boxed{p=4}
4 0
3 years ago
Other questions:
  • HeLp!! Please explain
    5·1 answer
  • Sometimes data do not follow a normal distribution and are pulled toward the tails of the curve. When this occurs, it is referre
    11·1 answer
  • Solve the system <br><br> <img src="https://tex.z-dn.net/?f=%5Cleft%20%5C%7B%20%7B%7By%5E2-26%3D-x%5E2%7D%20%5Catop%20%7Bx-y%3D6
    15·1 answer
  • Is the origin Located at the point (1,1)
    14·2 answers
  • Richard and Teo have a combined age of 26 . Richard is5 years older than twice​ Teo's age. How old are Richard and​ Teo?
    10·1 answer
  • Plzzzzzzzzzzzzzzzzzzzz
    13·2 answers
  • What is $5.36 for 20 oz
    11·1 answer
  • HELP ME HELP ME<br><br>PLEASE PLZ PLZ
    6·1 answer
  • Maria is trying to decide which one of two winter coats she should buy. The blue coat usually costs $48 but is on sale for 25% o
    6·1 answer
  • I need help please..​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!