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qaws [65]
3 years ago
5

In a bag there are 4 black marbles and 2 green marbles. What is the probability of choosing a black marble, not replacing it, th

en choosing a green marble?
Mathematics
1 answer:
uranmaximum [27]3 years ago
8 0

Answer:

It'd be 4/15

Step-by-step explanation:

The total marbles is 6, so for black it's 4/6, but it's not being put back in so for the next one, the denominator would be 5. For green it's 2/5

4/6 times 2/5 equal 4/15

Hope this helps!

You might be interested in
Two numbers are in the ratio 3/4. If 4 is subtracted from each they are in the ratio of 5/7. Find the numbers!
frosja888 [35]

Answer:

The two numbers are 24 and 32

Step-by-step explanation:

We can use the variable x

3x : 4x, would be a ratio of 3/4

now subtract 4 from both

3x - 4 : 4x - 4 = 5/7

3x-4 / 4x-4 = 5/7

cross multiplication

7(3x - 4) = 5(4x - 4)

21x - 28 = 20x - 20

x = 8

Two numbers are;

3x, 4x

3(8), 4(8)

24, 32

24/32 = 3/4

20/28 = 5/7

3 0
2 years ago
The volume of a cylinder is 8,478 cubic inches, and the radius is 15 inches. Which measurement is closest to the
MrRa [10]
I think it might be 90in. I’m not quite sure
5 0
3 years ago
Read 2 more answers
Which equation is a linear function?<br> y=2^x -1<br> y=x/2-5<br> y=2/x +3 <br> y=x^2 +7
Umnica [9.8K]

Answer:

Second Choice.

Step-by-step explanation:

y = mx + b

That is the linear function. Any coefficients with higher degrees won't be considered as a linear function.

So we can cut out the first and last choice.

Then we have only two choices which are

y =  \frac{x}{2}  - 5 \\ y =  \frac{2}{x}  + 3

The second equation is called <u>Rational</u><u> </u><u>Function</u><u> </u>where a variable is a denominator.

Therefore, the correct answer is second choice.

5 0
3 years ago
Simplify, if x = 2 and y = -1: 3(y + 2)^2 + 3x
svet-max [94.6K]

Answer:

9

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Step-by-step explanation:

<u>Step 1: Define</u>

3(y + 2)² + 3x

x = 2

y = -1

<u>Step 2: Evaluate</u>

  1. Substitute:                    3(-1 + 2)² + 3(2)
  2. Add:                              3(1)² + 3(2)
  3. Exponents:                   3(1) + 3(2)
  4. Multiply:                        3 + 6
  5. Add:                              9
5 0
3 years ago
How many white marbles are there?
vitfil [10]
I believe the answer is 6 white marbles. how i figured that out was i made an equation. i took the variable Y (for the yellow marbles) times 2 minus 6 equals 18. you then add 6 to the other side of the equal sign to cancel out the 6. you then have y(2)=24. you divide y and 24 by 2. you get 12 yellow marbles. next step is to take 18 - 12. you are left with 6 white marbles. hope this helps!

7 0
3 years ago
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