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KIM [24]
3 years ago
14

A bag has 6 red rocks, 1 orange rock, 4 blue rocks, 1 white rock, and 7 yellow rocks. You randomly pull a rock from the bag, kee

p it out and then pull out another one. What is the probability of not getting a orange and then not getting a orange?
Mathematics
1 answer:
8090 [49]3 years ago
5 0

Answer: 17/19

Step-by-step explanation:

Number of red rocks = 6

Number of orange rock = 1

Number of blue rocks = 4

Number of white rock = 1

Number of yellow rocks = 7

Total number of rocks = 19

Probability of not getting a orange the first time will be (1 - 1/19) = 18/19.

Probability of not getting an orange the second time will be: (1 - 1/18) = 17/18

Probability of not getting an orange on both occasion will be:

= 18/19 × 17/18

= 17/19

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Simplify square root<br>​
Tasya [4]

Answer:

Here is the rule: when a and b are not negative

√(ab) = √a × √b

Example: simplify √8

√8 = √(4×2) = √4 × √2 = 2√2

(Because the square root of 4 is 2)

In other words 2 x 4 = 8 = √2 x 4 but 4 can be simplified more (2 x 2) so 2 (previous 4) moves to the left of the square root leaving  2√2

To simplify a square root: make the number inside the square root as small as possible (but still a whole number)

or you can use a simplifying square root calculator.

8 0
4 years ago
If O N = 8 x − 8 , L M = 7 x + 4 , N M = x − 5 , and O L = 3 y − 6 , find the values of x and y for which LMNO must be a paralle
posledela

Answer:

x=12\\y=\frac{13}{3}


Step-by-step explanation:

For it to be a parallelogram, opposite sides have to be of same length.

  • OL = NM, and
  • ON = LM

Using the expressions given, we can make 2 equations:

<u>Equation 1:</u>

OL=NM\\3y-6=x-5\\-x+3y=1


<u>Equation 2:</u>

ON=LM\\8x-8=7x+4\\


<em>Solving equation 2, we have x:</em>

8x-8=7x+4\\8x-7x=4+8\\x=12

<em>Plugging this value of x into equation 1, we can solve for y:</em>

-x+3y=1\\-(12)+3y=1\\-12+3y=1\\3y=13\\y=\frac{13}{3}

So,

x=12\\y=\frac{13}{3}



7 0
4 years ago
Identify the LCM for 6 and 18.<br> 36<br> 108<br> 18<br> 6
Nonamiya [84]
<h2>Answer:</h2><h2>18</h2><h2 /><h2>Hope this helps!!</h2>

4 0
3 years ago
Read 2 more answers
HELP PLEASE. 20 POINTS
DIA [1.3K]

Answer:

(x,y) to (2x,2y) and (x,y) to (x+2,y+2)

Step-by-step explanation:

Brainliest pls :)

5 0
3 years ago
many colleges determine the number of full time students ,f,by using the formula f=n/15, where n is the total number of credits
Ivan
If students on a campus register for 68,235 credits, many colleges will estimate
the number of full-time students by using the formula

f = n / 15 = 68,235 / 15 = 4,549 students
7 0
3 years ago
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