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elena-s [515]
3 years ago
13

A box contains 8 green and 4 blue marbles. Two marbles are selected (at once with no replacement). Find the expected number of g

reen marbles among the selected ones.
Mathematics
1 answer:
Shkiper50 [21]3 years ago
5 0
The answer is the amazing 32


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ROUND OFF 0.524 TO THE NEAREST HUNDREDTHS
larisa [96]

0.52

Step-by-step explanation:

To round 0.524 to the nearest hundredth consider the thousandths’ value of 0.524, which is 4 and less than 5. Therefore, the hundredths’ value of 0.524 remains 2.

0.524 rounded to the nearest hundredth = 0.52

8 0
3 years ago
2 minutes and 45 seconds simplify so they have a common unit.
sp2606 [1]

Answer: 165 secs

Step-by-step explanation:

2 mins has 120 secs in it

120 + 45 = 165

3 0
3 years ago
The length of a rectangular picture frame is 2 inches shorter than its width. If the perimeter of
jok3333 [9.3K]

Answer:

Length = 12 inches

Width = 14 inches

Step-by-step explanation:

Formula for perimeter of a rectangle is;

P = 2(L + W)

Where;

L is length

W is width

We are told that the length is 2 inches shorter than its width. Thus;

L = (W - 2)

Thus,perimeter is now;

P = 2(W - 2 + W)

P = 2(2W - 2)

P = 4W - 4

We are told that the perimeter is 52. Thus;

4W - 4 = 52

4W = 52 + 4

4W = 56

W = 56/4

W = 14 inches

From L = (W - 2) ;

L = 14 - 2

L = 12 inches

3 0
3 years ago
Somebody plz plz help ASAP !!!
ANEK [815]

Answer:

6m^{2} + 6m -9m^{2}

=> (6m^{2} - 9m^{2}) + 6m

=> -3m^{2} + 6m

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

5 0
3 years ago
Atmospheric pressure at Earth's surface is approximately 14.7 pounds per square inch. Atmospheric pressure decreases by approxim
chubhunter [2.5K]

Answer:

The standard, or near-average, atmospheric pressure at sea level on the Earth is 1013.25 millibars, or about 14.7 pounds per square inch.

The gauge pressure in my automobile tires is a little more than twice that value. If you live at a higher altitude, the pressure will be lower since there is less air above weighing down upon you. The pressure also varies by relatively small amounts as high and low pressure systems move past.

Step-by-step explanation:

3 0
3 years ago
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