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matrenka [14]
3 years ago
15

A bag contains 28 blue marbles and 12 red marbles. If Milton removes two marbles without replacing them, what is the probability

that the first marble will be blue and the second one will be red?
Mathematics
1 answer:
Daniel [21]3 years ago
4 0
The probability the first marble will be blue is 28/40 
The probability the second marble will be red is 12/39 
The reason is because 28 + 12 = 40, so this makes the denominator for our first outcome, but then a marble is removed making our denominator 39 because 40-1 = 39. 
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Twelve identical cylindrical pop cans are placed in a box. If sand fills the space between the pop cans and the cans and the sid
Masteriza [31]

Answer:

Step-by-step explanation:

I don't see any information on dimensions of the cans or box, so I'll assume the question wants a general solution.

Three steps will result in the volume of sand required to fill the remaining space in the box.

1.  Calculate the volume of a can using the equation for the volume of a cylinder:  Vol = πr²h

2.  Multiply the can volume by 12.  This will give the total volume of the 12 cans in the box.

3.  Calculate the volume of the box:  Volume = (Base)(Width)(Height)

[Make sure the units are the same as those used in calculating the can volume.  E.g., if the can is calculated with cm as the measue, the box dimensions must also be cm]

4.  Subtract the volume of the12 cans (from step 2) from the volume of the box.

The result from 4 will be the volume of sand required to fill the box containing 12 cans.  

I'm not clear why filling the box with sand is important, but perhaps it will absorb any soda released from cans broken when the heavy box is dropped by the person shocked that 12 cans of pop could be so heavy.

4 0
2 years ago
Solve the compound inequality. Graph the solution
romanna [79]

Answer:  Choice B

Work Shown:

-2 \le 2x-4 < 4\\\\-2+4 \le 2x-4+4 < 4+4\ \text{ ... add 4 to all sides}\\\\2 \le 2x < 8\\\\2/2 \le 2x/2 < 8/2\ \text{ ... divide all sides by 2}\\\\1 \le x < 4\\\\

This says that x is between 1 and 4; it can equal 1, but it can't equal 4.

To visually represent this, we'll have a closed circle at 1, an open circle at 4, with shading in between these circles. This is represented by graph B.

8 0
3 years ago
Read 2 more answers
Eff traveled at an average speed of 65 miles per hour for 2.5 hours and then traveled at an average speed of 70 miles per hour f
AleksandrR [38]

Answer:

267.5 miles

Step-by-step explanation

65×2.5=162.5                

70×1.5=105

162.5+105=267.5

<h2>                                267.5</h2>
3 0
3 years ago
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Anestetic [448]
The 3 novels should be arranged in one side of the shelf.
The 2 mathematics books should be arranged in the other side of the shelf.
The 1 chemistry book should be arranged with the mathematics shelf because they are both study topics
4 0
3 years ago
Please answer this im going to fail Rewrite the fraction as a decimal.
ivolga24 [154]

Step-by-step explanation:

it ia 76.92 is the percentage for 10/13

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