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
MAVERICK [17]
3 years ago
11

Six red marbles, 4 green marbles and 2 blue marbles are placed in a jar. What is the probability of selecting a red marble and t

hen another red marble given the first marble is not returned to the jar after it is drawn?
2/11

5/22

2/33

5/33
Mathematics
1 answer:
Karolina [17]3 years ago
3 0

|\Omega|=12\cdot11=132\\ |A|=6\cdot5=30\\\\ P(A)=\dfrac{30}{132}=\dfrac{5}{22}

You might be interested in
Simplify: 9^-3<br><br><br> Please help!
dalvyx [7]

Answer:

Fraction form:       1/729

Decimal form:      0.00137174...

Exponent form:   3^-6

7 0
3 years ago
I don't need you to work it out, just theorem(s) i need to reach the answer :)
VikaD [51]
Not sure why such an old question is showing up on my feed...

Anyway, let x=\tan^{-1}\dfrac43 and y=\sin^{-1}\dfrac35. Then we want to find the exact value of \cos(x-y).

Use the angle difference identity:

\cos(x-y)=\cos x\cos y+\sin x\sin y

and right away we find \sin y=\dfrac35. By the Pythagorean theorem, we also find \cos y=\dfrac45. (Actually, this could potentially be negative, but let's assume all angles are in the first quadrant for convenience.)

Meanwhile, if \tan x=\dfrac43, then (by Pythagorean theorem) \sec x=\dfrac53, so \cos x=\dfrac35. And from this, \sin x=\dfrac45.

So,

\cos\left(\tan^{-1}\dfrac43-\sin^{-1}\dfrac35\right)=\dfrac35\cdot\dfrac45+\dfrac45\cdot\dfrac35=\dfrac{24}{25}
7 0
3 years ago
(5x – 3y) (3x + 4y)​
MariettaO [177]

Answer:

\boxed{\red{15 {x}^{2}  + 11xy - 12 {y}^{2}}}

Step-by-step explanation:

\blue{(5x - 3y)(3x + 4y)} \\ \blue{5x(3x + 4y) - 3y(3x + 4y)} \\ \blue{15 {x}^{2}  + 20xy - 9xy - 12 {y}^{2} } \\ \pink{=  15 {x}^{2}  + 11xy - 12 {y}^{2} }

6 0
3 years ago
Read 2 more answers
The sum of two numbers is 27. One number is 2 times as large as the other. What are the numbers?
mafiozo [28]
X+y=27
x=2y

2y+y=27
y=9

x=27-y
x=27-9=18
7 0
3 years ago
Write an inequality to represent the situation. <br> A cheese pizza costs at least $5.
Nady [450]
<
-  5 dollars, the V thing sits on top of the line and 5 comes after signifying that it could be 5 dollars or more
8 0
3 years ago
Read 2 more answers
Other questions:
  • How do I solve this problem
    14·1 answer
  • Delaney has 4 times as many books as she has movies. If she buys 15 more movies ( but no more books ), her ratio of movies to bo
    14·1 answer
  • Write y = 2x2 – 10 in vertex form
    7·1 answer
  • Please Help I will mark Brainliest or whatever Match each function formula with the corresponding transformation of the parent f
    10·1 answer
  • Calculate the length of the Line in the trapezoid AC showing working to 1dp
    14·1 answer
  • Please quick responses!!
    8·1 answer
  • What is 2/11 as a decimal rounded to 3 decimal places?
    14·1 answer
  • 20 POINTS PLEASE HELP URGENT! Chad worked for 4 3/5 hours and earned $34.73.
    9·2 answers
  • Suppose a charity received a donation of $22.2 million. If this represents 34% of the charity’s donated funds, what is the total
    12·1 answer
  • Type the correct answer in the box. Use numerals instead of words.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!