A box contains 7 red marbles, 4 white marbles, and 5 blue marbles. If only white marbles are added to the box, how many must be added to make the probability of drawing a white marble 1/3?
Answers
Number of white marble added for same probability is 2
Given:
Number of red marble in box = 7
Number of white marble in box = 4
Number of blue marble in box = 5
Probability of drawing a white marble = 1/3
Find:
Number of white marble added for same probability
Computation:
Assume;
Number of white marble added = a
[tex]Probability = \frac{Number\ of\ favorable\ outcomes}{total\ outcomes}[/tex]
So,
[tex]\frac{1}{3} = \frac{(a + 4)}{(7 + 4 + 5 + a)} \\\\\frac{1}{3} = \frac{(a + 4)}{(16 + a)} \\\\16 + a = 3a + 12 \\\\ 2a = 4\\\\a = 2[/tex]
Number of white marble added = 2
Learn more:
https://brainly.com/question/23044118?referrer=searchResults
Answer:
2
Step-by-step explanation:
Related Questions
please help me i need this grade !
Answers
Answer:
C. 15
Step-by-step explanation:
[tex]a^2 + b^2 = c^2[/tex] a= 9 b = 12. which would = 225
[tex]\sqrt{225}[/tex] = 15
Answer:
c. 15
Step-by-step explanation:
A right triangle can use the pythagorean theorem. Using this theorem you should get
[tex]12^2 + 9^2 = c^2\\c=\sqrt{144+81} \\c=15[/tex]
How do I solve for x? (Please Show Work)
Answers
Answer:
x = 17.6
Step-by-step explanation:
use sine
⇒ sine = [tex]\frac{opposite}{hypotenuse}[/tex]
⇒ sine 62 = [tex]\frac{20}{x}[/tex]
sine of 62 is 0.88
⇒ 0.88 = [tex]\frac{20}{x}[/tex]
multiply 20 on both sides
⇒ 0.88 x 20 = [tex]\frac{20}{x}[/tex] x 20
⇒ 17.6 = x
Help what do I put for 3??
Answers
Answer:
c = 48m
Step-by-step explanation:
For every box, she can make 240/5 = 48 cupcakes. So, the equation is
c = 48m
PLEASE HELP I need to answer the question quick .
Write a linear equation in point-slope form for the line that goes through
(1, -3) and (3,9)
Answers
Answer:
D. y+3 = 6(x-1)
Step-by-step explanation:
i just wrote it out and i think thats the answer but not sure. hopefully this helps :)
resolver las siguientes ecuaciones de primer grado -5×-6=24
Answers
-11=24 you would divide 24/-11=-2.18
Write a sentence to answer each question:
How much warmer is 82 than 40?
Answers
Answer:
82 is 42 degrees warmer than 40
Step-by-step explanation:
if you subtract 40 from 82, you get 42 meaning that the answer will be 42 degrees more than 40
Simplify: 70x/2x.
A. 32
B. 33
C. 34
D. 35
Answers
Hope this helped.
Sam took a math test and got 35 out of 50 answers correct. What was the percentage of correct answers?
A. 70%
B. 50%
C. 35%
D. 75%
Answers
Answer:
A.70&
Step-by-step explanation:
35/50 averaged is 70%
Which of the following is FALSE for the Rectangle shown? (Highlight ONE)
Answers
Answer:
Step-by-step explanation:
Solve:
V5x+1+6=4
V=square root
Answers
Answer:
the answer is c hope it help
Answer: D
Step-by-step explanation:
1. movethe constanat to the right
2. Calculate
3.The statement is false
Epositas $545,680 pesos en una cuenta que ofrece pagar 2.25.% semestral durante año y 10 meses a) ¿Cuánto recibirás en total al final del plazo?
Answers
Responder:
$ 555,911.5
Explicación paso a paso:
Dado
Principal = $ 545,680
Interés = 2,25%
Tiempo = 10 meses = 10/12 años
Debemos buscar la cantidad después de 10 meses.
Monto = Principal + Intereses
Interés = PRT / 100
Interés = 545,680 * 2,25 * 10/1200
Intereses = 12,277,800 / 1200
Interés = 10.231,5
Cantidad = 545,680 + 10,231.5
Cantidad = 555,911.5
por lo tanto, la cantidad después de 10 meses es $ 555,911.5
Yo can someone help me
Answers
Answer:
Graph #2
Step-by-step explanation:
I would use Desmos for this, makes it easier to find out which graph is for the equation.
A recipe calls for 1/2 cup sugar and 1 cup flour. How much flour will you need if you use 1 cup of sugar?
Answers
someone pls pls pls help
Answers
Answer:
[tex]I= \frac{1}{ {2}^{t} } [/tex]
Step-by-step explanation:
Please see the attached picture for the full solution.
Find the missing leg
Answers
Omg the legs are gonee
fr where are the legs
How many solutions are there to the system of equations shown?
{16x−12y=40
4x−3y=10
I don't really understand these so an explanation would be nice :)
Answers
Step-by-step explanation:
-6 i think
Answer:
infinitely many solutions
Step-by-step explanation:
right on edg
In triangle Uvw , the measure of angle w=90°, the measure of angle u=50 , and wu = 27 feet. Find
the length of Vw to the nearest tenth of a foot.
Answers
Answer:
32.2 feet
using trigonometry, we find that sin(u)=VW/WU
sin50=VW/27
27sin50=32.177347
VW=32.2
Answer the questions to describe the transformations of figure ABCD.
B
6
CIC
B'
8
D D'
A
6.3
A
D"
A"
B"
1. Is ABCD a translation, rotation, or reflection of ABCD? Explain how you can tell.
Answers
Answer:
1. Reflection
2. rotation and reflection
3. b', b''
4. 26.3
Step-by-step explanation:
1. It is like looking in a mirror. Its is being reflected across the y axis
2. It is rotated 90 degrees to the right. Then reflected over the x axis.
3. they are the same
4. It is the same as A" B" C" D" so the lengths are the same and you just add them.
Step-by-step explanation:
Mitch throws a ball over a 20 foot fence to a baseball field
Answers
Answer:
can you expand on your question?
Step-by-step explanation:
umm plss help i dont know the answer
Answers
Answer:
x^2+1
You need to go ahead and distribute the power of 2 into the equation, remember pemdas is extremely important when doing this
9.Solve. 5a - 10 = 4a + 8Immersive Reader
(2 Points)
a = 18
a = -18
a = 2
a = -2
Answers
5a-10=4a+8
5a-4a=8+10
a=18
How much vanilla extract will be needed to make 2 dozen cookies? Show your work.
Answers
Answer: the answer is 2 teaspoons of vanilla extract.
hope this helped
PLS help ASAP I DONT have time to answer this, it also detects if it’s right or wrong.
Answers
Answer:
31.4
Step-by-step explanation:
find the perimeter of the rectangle below
Answers
Answer:
I don't know that but the W is x+1/2
Step-by-step explanation:
hope this helps
Dana bought 12 pizzas for a Math Club party. Some were pepperoni pizzas that $11.00 each,
and the rest were mushroom pizzas that cost $9.50 each. She paid $124.50 for the pizzas. How
many pepperoni pizzas did she buy
Answers
Answer:
7 pepperoni pizzas
Step-by-step explanation:
First, you take the biggest number and subtract it by 9.5 until you get a number that can be divided into 11 which is 77.
Answer:
7 pepperoni pizzas
Step-by-step explanation:
Where p = # of pepperoni pizzas and m = # of mushroom pizzas
124.50 = 11p + 9.5m
Now you need to guess and check:
Use this equation: (124.5 - 11 * p) / 9.5 and replace p with whole numbers until you get a whole number as the output
I got p=7 and m=5
So she bought 7 pepperoni pizzas
Find the value of 63.
Answers
Answer:
63 is equal to itself. Is that what you meant? If not, please send a screenshot of the problem. You can edit the post.
Answer:
The value of 63???? 63??
Marty paid $45 for a jacket that had been marked down 25%. What is the original price of the jacket?
Answers
Answer:
$60
Step-by-step explanation:
Since the jacket is marked down 25%, it is now at the value of 75%.
75% of the value is $45.
100% of the value is=45×100/75=$60
Therefore, the original price of the jacket is $60.
Find the slope of the line.
Answers
Step-by-step explanation:
y2-y1/
x2-x1
3-(-3)/
1--2
6/3=2
What is 3(x + 2) – 2x + 4 in tile form urgent for a test
pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeese help me
Answers
Answer:
b
Step-by-step explanation:
3(x + 2) - 2x + 4
3x + 6 - 2x + 4
combine like terms:
1x + 10
3tan(x) = 2sin(2x) from [0,2 pi)
(Please explain steps)
Answers
Answer:
The answer is "[tex]\bold{\frac{\pi}{6}}[/tex]"
Step-by-step explanation:
[tex]\to 3 \tan(x) = 2 \sin(2x) \\\\[/tex]
[tex]\to 3 \frac{\sin x}{\cos x} = 2 2\sin x \cos x \\\\\to 3 \frac{\sin x}{\cos x} = 4\sin x \cos x \\\\\to \frac{\sin x}{\cos x \sin x \cos x } = \frac{4}{3} \\\\\to \frac{1}{\cos^2 x } = \frac{4}{3} \\\\\to \sec^2 x = \frac{4}{3} \\\\\to \sec x = \frac{2}{\sqrt{3}} \\\\\to \sec x= \sec \frac{\pi}{6} \\\\ \to x= \frac{\pi}{6}[/tex]