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
aliina [53]
3 years ago
13

Hi i am Grace and i realllyyyyyy need help on this. If you could please help that would be great.

Mathematics
1 answer:
uranmaximum [27]3 years ago
7 0
The probability of picking a black ball first is \dfrac{4}{5}, because there are 4 black balls and 1 white ball which is 5 balls in total. After picking the first ball, 4 balls remain - 3 black and 1 white, so the probability of picking a white ball is \dfrac{1}{4}.
So, the probability of picking a black ball first followed by a white ball is \dfrac{4}{5}\cdot\dfrac{1}{4}=\dfrac{1}{5}
You might be interested in
Please answer the question below. Topic: Scale drawings
ch4aika [34]
It would be 100. Hope it helps!
8 0
3 years ago
What is the definition of a polynomial?
Nady [450]

Answer:

an expression of more than two algebraic terms, especially the sum of several terms that contain different powers of the same variable(s).

6 0
3 years ago
Read 2 more answers
The product of 15 and the difference between 5 and - 7<br> A numerical expression
kupik [55]

Answer:

15×5-7

75-7

68

answer =68

5 0
2 years ago
What slope does a horizontal line have?
ioda

Answer:

Step-by-step explanation:

Horizontal

5 0
3 years ago
Read 2 more answers
3k^2+12k-7kn-28n square meters and a length of 3k-7n meters.
melomori [17]

Step-by-step explanation:

here ! I used the formula area = length × width

and just some algrbric expressions solving

4 0
2 years ago
Other questions:
  • Please help not sure how to do this
    5·1 answer
  • We toss two dice 1,000 times. How many times do we expect to have the sum of the two dice equal to 4?
    5·1 answer
  • I need to solve cy−7=5d+3y for y, any help?
    6·2 answers
  • ABCD is a square. M is the midpoint of BC and N is the midpoint of CD. A point is selected at random in the square. Calculate th
    10·1 answer
  • Sarah bought a binder for $7.25 and six folders that totaled $9.05. How much did each folder cost?
    9·1 answer
  • a farmer plant white rice and brown rice on 10 acres and he has 18 liter of pesticide to use. white rice requires 2 liters of pe
    6·1 answer
  • Please help me i need this grade !
    6·1 answer
  • 2.5 Discuss FIVE important steps relating to career decision making​
    6·1 answer
  • The expression 7d gives the number of days in d weeks . Evaluate 7d for d=12. How many days are in 12 weeks?
    11·2 answers
  • Lindsay got her hair cut. The cost of a haircut
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!