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
ollegr [7]
3 years ago
7

A bag contains blue and yellow marbles. Two marbles are drawn without replacement. The probability of selecting a blue marble an

d then a yellow marble is 0.37, and the probability of selecting a blue marble on the first draw is 0.55.
What is the probability of selecting a yellow marble on the second draw, if the first marble drawn was blue?
A) 18%
B) 20%
C) 46%
D) 67%
Mathematics
1 answer:
exis [7]3 years ago
7 0
 blue marbles
y = yellow marbles
 Sum = b+y
 The <span>chance of a blue marble being drawn first is:
b / (b+y) = 0.55 
</span>The <span>chance of a blue marble being drawn first then a yellow next is:
</span>b / (b+y) * y / (b+y-1) = 0.37
This can be solve easily by using a theorem of Bayes 
0.37/0.55 = .67 or 67%
You might be interested in
You enter a relay race. To start, you must run 20 yards to Checkpoint A. You then must turn and run 12 yards to Checkpoint B. La
Anarel [89]

Distance to checkpoint A from starting line = 20 yards.

Then from A to B distance = 12 yards.

Let us take starting point C.

So, it would make a right triangle.

We have AB = 12, AC = 20, we need to find BC, that is Hypotenuse of the right triangle.

According to Pythagoras theorem:

BC^2 = AB^2+AC^2

BC^2 = 12^2+20^2

BC^2 = 144 +400 = 544

BC= \sqrt{544}

BC = 23.32.

<h3>Therefore,  23.32 yards is the distance from Checkpoint B to the starting line.</h3>
7 0
3 years ago
Read 2 more answers
The product of 2 and y is at least 10. solving inequalities
White raven [17]
2•y>10
The “>” has a line underneath it
5 0
2 years ago
Read 2 more answers
1. Mr. Hurst's house increased in value to $185,400 one year after he bought
katovenus [111]

Answer:

B.

Step-by-step explanation:

Mark me brainliest if correct plz. If incorrect, you can give me 1 star to let me know. Thank you!

8 0
3 years ago
????????????????????????????
Anna [14]
If you type in both the coordinates it’ll give you the answer on google. That’s how I did this.
3 0
3 years ago
Read 2 more answers
Work out the angle of elevation from the
insens350 [35]

\quad \huge \quad \quad \boxed{ \tt \:Answer }

\qquad \tt \rightarrow \:Angle \:\: of \:\: elevation= 30°

____________________________________

\large \tt Solution  \: :

Let the angle of elevation be " x "

\qquad \tt \rightarrow \:  \cos(x)  =  \dfrac{9 \sqrt{3} }{18}

\qquad \tt \rightarrow \:  \cos(x)  =  \dfrac{ \sqrt{3} }{2}

\qquad \tt \rightarrow \: x =  \cos {}^{ - 1}  \bigg( \cfrac{ \sqrt{3} }{2} \bigg )

\qquad \tt \rightarrow \: x = 30 \degree \:  \:  or \:  \:  \cfrac{ \pi}{6}   \:  \: rad

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

8 0
2 years ago
Read 2 more answers
Other questions:
  • Write the equation of the line passing through (-3,4) and perpendicular to -2x+7y=-3.​
    11·1 answer
  • Will mark ya brainliest for the right answer!
    6·2 answers
  • It's #25 guys. Show your work!
    15·1 answer
  • Find the area of a square where each side measures 7.6 ft.
    11·2 answers
  • If the supply of computer engineers increases at the same time that the demand for these workers decreases, what would be the MO
    10·2 answers
  • 0.2(x + 1) + 0.5x = –0.3(x – 4)
    8·1 answer
  • A local hamburger shop sold a combined total of 557 hamburgers and cheeseburgers on Friday. There were 57 more cheeseburgers sol
    11·1 answer
  • HELP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE please
    11·1 answer
  • Determine slope of any line perpindicular to GH. (-1,2) (-2,-1)
    8·1 answer
  • A C (prima) = 14cm AC= 5cm<br><br><br>Cual es la razón de la homotecia?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!