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
Vladimir [108]
3 years ago
14

HELP ME A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she take

s a red marble is 1 in 5. Yasmine returns the marble to the bag and adds five more red marbles to the bag. The probability that she takes one red marble at random is now 1 in 3. How many red marbles were originally in the bag?
A 10 RED B 2 RED C 5 RED D 3 RED
Mathematics
1 answer:
Sidana [21]3 years ago
7 0

Answer:

C. 5 Red marbles

Step-by-step explanation:

If she started with 5 red marbles and had a probability of 1/5 of drawing a red marble, then there were 20 blue marbles, and 25 total marbles.

   5/25 = 1/5

If she added 5 red marbles, she now would have 10 red marbles and still 20 blue marbles, giving her 30 total marbles in the bag.

  10/30 = 1/3, so C is the right answer.  

You can rule out other choices by repeating the above steps and substituting appropriate values

You might be interested in
Complete the following statement. Round to the nearest hundredth .
RSB [31]

f(x) = 3/(x + 2) - √x - 3

f(7) = 3/(7 + 2) - √7 - 3

f(7) = 3/9 - √4

f(7) = 0.333 - 2

f(7) = -1.67

7 0
3 years ago
Suppose Casey Title Company normally charges $300 for services related to selling a house. As part of a summer special, Casey of
g100num [7]

Given :

Casey's company charges , C = $300.

In summer special, Casey offers customers a trade discount of 25%.

To Find :

Charges during summer.

Solution :

Let, x is the amount of charges they take during summer.

Casey offers customers a trade discount of 25%.

x =300(1-\dfrac{25}{100})\\\\x=300(1 - 0.25)\\\\x=300(0.75)\\\\x=\$225

Therefore, amount of charges during summers are $225.

Hence, this is the required solution.

8 0
3 years ago
Keshawn is constructing the inscribed circle for △PQR. He has already used his compass and straightedge to complete the part of
BartSMP [9]
Construct the perpendicular to <span><span>QR</span><span>¯¯¯¯¯</span></span><span> that passes through point </span>X<span>.</span>
6 0
3 years ago
Read 2 more answers
A
Evgesh-ka [11]
The answer will end up being c
6 0
3 years ago
HELP!!!! WILL MARK BRAINLIEST!!!!
Harrizon [31]

Answer:

the vaulue is denominator

Step-by-step explanation:

it's it's the denominator

3 0
3 years ago
Read 2 more answers
Other questions:
  • A certain fraction has a value of 15. the denominator is four more than three times the numerator. what is the fraction?
    7·1 answer
  • What's the answer for 2 and 3
    13·1 answer
  • What's 0.5 is 10 times as great as
    11·1 answer
  • What is the prime factorization of 1,575 (with work)
    6·2 answers
  • I need helpp ! asap please<br><br><br> i inserted a photo of the question.
    14·2 answers
  • Equivalent expressions for 7x-6x+4x
    11·1 answer
  • Whats 9x-6-13x=94? how do you do it?
    7·1 answer
  • HELP ME PLSS ASAP!!
    11·2 answers
  • If x=5y-1and 3x+5=-32, what is the value of y
    9·1 answer
  • How are key features of a linear function identified and interpreted from a description?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!