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
NISA [10]
3 years ago
14

Find the missing probability.

Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0
<h3>Answer: P(B) = 7/20</h3>

==========================================

Work Shown:

Given info

P(A) = 7/20

P(A∩B)=49/400

P(B) = unknown

--------------------

P(A∩B) = P(A)*P(B), assuming A and B are independent events

49/400 = (7/20)*P(B)

(7/20)*P(B) = 49/400

P(B) = (20/7)(49/400)

P(B) = (20*49)/(7*400)

P(B) = (20*7*7)/(7*20*20)

P(B) = 7/20

---------------------

Note how

P(A∩B) = P(A)*P(B)

P(A∩B) = (7/20)*(7/20)

P(A∩B) = (7*7)/(20*20)

P(A∩B) = 49/400

which helps to confirm the answer.

You might be interested in
Mrs Harris needs 2 and3/4 meters of material to make a dress. How many similar dresses could she make from a roll of material, 3
Cerrena [4.2K]
Calculate all of them

8 0
3 years ago
4r+9r-11r+7r= Simplify Combine like terms
Veseljchak [2.6K]

Answer:

9r

Step-by-step explanation:

4r+9r-11r+7r

Combine like terms

13r -11r+7r

2r+7r

9r

3 0
2 years ago
Read 2 more answers
Find w.<br><br> A. 8.9<br><br> B. 0.05<br><br> C. 0.08<br><br> D. 5.2
enyata [817]

Answer:

Step-by-step explanation:

Measure of angle V = 180 - 62 - 36 = 82 degrees

So by the law of sines, 10/sin(82 deg) = w/sin(62 deg)

w = [10sin(62)]/sin(82)

from here just plug this into a calculator

4 0
2 years ago
Y=-4x-41 that passes through (-2,7)
dalvyx [7]

Answer:

Parallel: y=-4x-1

Perpendicular: y=-4x+13/2

Step-by-step explanation:

For the equation y=-4x-41, the slope is -4. Writing a line related to this equation has two options:

  • If the line will be parallel to it then this is the slope of the new line as well. Use the point-slope form to write the equation, then simplify and convert into the slope intercept form.

(y-7)=-4(x--2)


y-7=-4x-8


y=-4x-1

  • If the line will be perpendicular to it then the slope is the negative reciprocal of the previous slope. It is 1/4.

(y-7)=1/4(x--2)


y-7=1/4x-1/2


y=-4x+13/2


4 0
3 years ago
Read 2 more answers
Factorise p^2 + 30p
Amanda [17]

Answer:

Step-by-step explanation:

hello :

p²+30p = p(p+30)

7 0
3 years ago
Other questions:
  • Need help with dilation with a scale factor of 1/2 centered at (−1, 3)
    13·1 answer
  • Please help need answer asp
    14·1 answer
  • Find the value of the expression (-101)+102+(-103)+104+...+(-199)+200.
    14·1 answer
  • I need help finding the answer
    6·1 answer
  • Find the vertex of the graph of the function. f(x) = (x + 4)2 - 1
    13·1 answer
  • Is 14 a root of the equation 2x - 16 = - 44 ? Why or why not
    8·1 answer
  • What is the first step to solving the equation 12 - y = 18?
    6·2 answers
  • HELP????!?!?!??!? {PLEASEEEEEEEE
    7·1 answer
  • Simplify:
    12·1 answer
  • The most expensive type of life insurance is
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!