MATHEMATICS HIGH SCHOOL

A bag contains 2 red, 4 yellow, and 6 blue marbles.Two marbles are drawn at random. Find the portability that both are blue.

Answers

Answer 1

Answer:

If two marbles are drawn at random, the probability that they are both blue is 1/4

The formula for calculating the probability is given as:

Probability = Expected outcome/Total outcome

Given that a bag contains 2 red, 4 yellow, and 6 blue marbles

Total outcome = 2 + 4 + 6 = 12 marbles

Since we are to find a probability of picking 2 blue balls

Pr(2 blue balls) = 6/12 * 6/12

Pr(2 blue balls) = 1/2 * 1/2

Pr(2 blue balls) = 1/4

Hence if two marbles are drawn at random, the probability that they are both blue is 1/4

Learn more here: brainly.com/question/22664861

Answer 2

Answer: Total number of marbles is 12, there are 6 blues.
When picking the first one the probability to pick the right one is $(6)/(12)=(1)/(2)$
When we pick the second one there are 11 marbles and only 5 blue so the probabilty is $(5)/(11)$

We need to pick 2 blues one after another so we multiply probabilities $(1)/(2)*(5)/(11)=5/22=0.227$ The probability is around 23%

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Driving at a constant speed, Reggie travels 300 kilometers in 1 hour. What is Reggie’s speed in kilometers per hour?

Answers

It is given in the question that Driving at a constant speed, Reggie travels 300 kilometers in 1 hour.

So here distance is 300 kilometers and time is 1 hour .

The formula of speed is

$speed = (distance)/(time)$

Substituting the given values of distance and time, we will get

$speed = \ frac{300}{1} km/hour$

So when distance is 300 km and time is 1 hour, so speed is 300 km/hour and that's the answer .

Answer: 300 kilometers per hour

Step-by-step explanation:

Given : Driving at a constant speed, Reggie travels 300 kilometers in 1 hour.

Now, the formula to find speed is given by:-

$\text{Speed}=\frac{\text{distance}}{\text{time}}$

i.e. Reggie’s speed in kilometers per hour = $(300)/(1)$

i.e. Reggie’s speed in kilometers per hour = $300$

Hence, Reggie’s speed is 300 kilometers per hour.

2x+3=-7 what does x equal

Answers

Answer:-5

Step-by-step explanation:

2x+3=-7

2x=-7-3

x=-10/2

so,

x=-5

Answer: x=-5

Step-by-step explanation: just did the assessment on edge

Depict an angle 7pi over 4 in standard position

Answers

I think it would be in the 4th quadrant so by 4s is 45 degree angles so 360 - 45 is 315 degrees    ---------------    that is how i think the drawing should be for 7pi/4.
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Answer:

i am pretty sure 360 - 45 is 315 right

Step-by-step explanation:

Pete is conducting a survey to determine his customers’ overall satisfaction about the quality of his company’s products. He sends out surveys to the 5 customers who have purchased the largest number of items over the past year. Are his results likely to be representative of the population he is trying to analyze?

Answers

No.
Because, when to do some sort of analysis (such as this one), you need to take (for example) a RANDOM SAMPLE from the POPULATION of the problem that is being analyzed. In this example (problem), Pete wants to evaluate OVERALL satisfaction of customers, so he should NOT send the surveys ONLY to the customers who have purchased the LARGEST number of items, but to the randomly selected customers, in order to obtain REPRESENTATIVE results of the OVERALL satisfaction. If he sends the surveys only to the customers who have bought the largest number of items, he will obtain VERY HIGH satisfaction of customers, as results, of course, and this will not be representative results.

No.

When trying to analyze an overall satisfaction with Quality of service. The number of population he is analyzing should not be limited to a certain factor. This would cause a narrow data information gather and would not represent the entire population. The surveys should be based randomly to avoid data bias/filters and actual results would be realistic.

Quadrilateral LMNO has diagonals that intersect at point P. If LP=NP, MP = y + 25, and OP = 5y + 29, find the length of MO such that LMNO is a parallelogram.. . A.24. B.48. C.61. D.122