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
erica [24]
3 years ago
7

From an urn containing 3 white and 2 black balls, two balls are drawn one after the other without replacement. What is the proba

bility that the first ball drawn is white and the second black?
Mathematics
1 answer:
Marina86 [1]3 years ago
6 0

Answer:

There is a 3/5 chance of the first ball being white, and a 3/10 chance the second one is black.

Step-by-step explanation:

There are 5 balls, of which 3 are white, so you have a 3/5 chance of the first one being white. Then you have 2 white and 2 black balls. There is a 2/4 chance of picking a black ball. Multiply 3/5 and 2/4 to get 6/20, or 3/10 for choosing a white ball then a black ball.

You might be interested in
Annie is the height shown.
Phoenix [80]

Answer:

Annie's height= 49 cm

Her brother's height= b+ 49

Let the sum be represented as x

x- 49 = b

7 0
2 years ago
Write the equation of the line containing each pair of points
Alja [10]
Can you please take a picture of each pair of points
4 0
3 years ago
Which points are the verticles of the ellipse? Equations of ellipse
Mashutka [201]

Answer:

This question is solved in detail below. Please refer to the attachment for better understanding of an Ellipse.

Step-by-step explanation:

In this question, there is a spelling mistake. This is vertices not verticles.

So, I have attached a diagram of an ellipse in which it is clearly mentioned where are the vertices of an ellipse.

Vertices of an Ellipse: There are two axes in any ellipse, one is called major axis and other is called minor axis. Where, minor is the shorter axis and major axis is the longer one. The places or points where major axis and minor axis ends are called the vertices of an ellipse. Please refer to the attachment for further clarification.

Equations of an ellipse in its standard form:

\frac{x^{2} }{a^{2} }  + \frac{y^{2} }{b^{2} } = 1

This is the case when major axis the longer one is on the x-axis centered at an origin.

\frac{x^{2} }{b^{2} } + \frac{y^{2} }{a^{2} }  = 1

This is the case when major axis the longer one is on the y-axis centered at an origin.

where major axis length = 2a

and minor axis length = 2b

3 0
3 years ago
Given that 2x – 9y = 11
Stels [109]

Answer:

y = 1/3

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

2x - 9y = 11

<em>x</em> = 7

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                                                                                                  2(7) - 9y = 11
  2. Multiply:                                                                                                             14 - 9y = 11
  3. [Subtraction Property of Equality] Subtract 14 on both sides:                       -9y = -3
  4. [Division Property of Equality] Divide -9 on both sides:                                 y = 1/3
8 0
2 years ago
Katie wants to collect over 100 seashells. She already has 34 seashells in her collection. Each day, she finds 12 more seashells
dlinn [17]

Answer:

12d+34>100  

Step-by-step explanation:

Let d be the number of days.

We have been that each day Katie finds 12 more seashells on beach, so after collecting shells for d days Katie will have 12d shells.  

We are also told that Katie already has 34 seashells in her collection, so total number of shells in Katie collection after d days will be: 12d+34

As Katie wants to collect over 100 seashells, so the total number of shells collected in d days will be greater than 100. We can represent this information in an inequality as:

12d+34>100

Therefore, the inequality 12d+34>100 can be used to find the number of days, d, it will take Katie to collect over 100 seashells.

8 0
3 years ago
Read 2 more answers
Other questions:
  • The graph shows the relationship between the total cost and the number of erasers bought at the student store. Which statement i
    5·1 answer
  • Plz help fast.Aka please don't waste my points.Show your Work
    6·1 answer
  • Eric wants to find out the most popular after-school activity among high school seniors at his school. What is the population in
    6·2 answers
  • 3. Find the slope the line that contains the points (1,9) and (-5,8)
    8·2 answers
  • Solve the equation to find a positive value of c:<br> 62 + 82 = c2
    13·2 answers
  • What is the value of x?<br> 160°<br> x =<br> 519
    13·2 answers
  • What fraction is equivalent to 3/4 divided by 1/6?
    7·2 answers
  • CAN SOMEONE HELP ME PLEASE
    6·1 answer
  • Explain the purpose of statements
    9·1 answer
  • PLEASE HELP!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!