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
Fed [463]
1 year ago
12

A bad contains 15 balls of which X is red. Write an expression for the probability that a ball drawn from the bad is red. When 5

more red balls are added to the bag, the probability becomes 3/4. Find the value of X.

Mathematics
1 answer:
antoniya [11.8K]1 year ago
5 0

Answer:

10

Step-by-step explanation:

The current probability of picking a red ball is \frac{x}{15}. When 5 more balls are added, the probability is 3/4. We can write a ratio for this problem:

\frac{x+5}{15+5} = \frac{3}{4}

When using cross multiplication to solve this, you get 3 * 20 = 4(x+5).

60 = 4x + 20

40 = 4x

x = 10 red balls

You might be interested in
Solve the following quadratic equations by completing the square.<br><br> y^2-14y+48=0
NISA [10]

Answer:

  y = 6 or 8

Step-by-step explanation:

1. Subtract the constant:

  y^2 -14y = -48

2. Add the square of half the y-coefficient:

  y^2 -14y +49 = -48 +49

Write as a square, if you like:

  (y -7)^2 = 1

3. Take the square root:

  y -7 = ±√1 = ±1

4. Add the opposite of the constant on the left:

  y = 7 ±1  =  6 or 8

The solution is y = 6 or y = 8.

5 0
3 years ago
8. A banker's loan officer rates applications for credit. The rates are normally distributed with a mean of 200 and a standard d
masha68 [24]

Answer:

802

Step-by-step explanation:

3 0
3 years ago
Find the sum 6Y a +7Ya
erma4kov [3.2K]

Answer:

13Ya is the answers for the question

Step-by-step explanation:

please mark me as brainlest

4 0
2 years ago
Need some assistance please
SVEN [57.7K]

Answer:I hope this could help !ut the answer is 4

Step-by-step explanation:

2 of them left so there are 4 left

8 0
3 years ago
Read 2 more answers
PT=7x-24 and TQ=6x-2, Find PT.
KengaRu [80]
Though we cannot exactly find PT, we can find it in terms of TQ. Multiply the second equation by 7/6 to get 7TQ/6=7x-7/3. Subtracting 65/3 from both sides, we get 7TQ/6-65/3=7x-24. Since the right side is equal to PT, PT=7TQ/6-65/3.
3 0
3 years ago
Read 2 more answers
Other questions:
  • April 15 is the _____. date you will receive your tax refund date you will receive your W-2 form deadline to file your tax retur
    5·2 answers
  • How do you do question 4, 5 and 6? I don't understand :(
    14·1 answer
  • Find the product of<br> 2x^2(x + 3)
    12·1 answer
  • 15 - 2b = -9<br> What does b equal
    8·2 answers
  • what is the perimeter, in centimeters, of a right triangle that has leg lengths of 8centimeters and 11 centimeters? round to the
    13·1 answer
  • Can anyone heelp me<br><br><br><br><br><br><br><br> b
    14·1 answer
  • Convert the following into standard form<br> Y=1/6x+2
    5·1 answer
  • I was confuse on number 5, 6, 7, 8.
    10·2 answers
  • 4x + 1 = 3 Would you describe this equation as always true, never true or Sometimes true?
    10·2 answers
  • I need help simplifying 5 1/2 ÷ 2 1/2 then writing it as a mixed number ​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!