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N76 [4]
3 years ago
8

A locker combination consists of two non-zero digits. The digits in a combination are not repeated and range from 2 through 9.

Mathematics
1 answer:
77julia77 [94]3 years ago
4 0

Answer:

Answer choice B

Step-by-step explanation:

There are two possibilities; in the first, the first digit is below 5, in the second, it is above. The probability of the first possibility is 3/8, because there are 3 possible digits below 5 and 8 total digits. In this scenario, the chance of the second digit being below 5 is 2/7, because one of the digits is taken. In the other possibility, which has a chance of 5/8, the probability of choosing a number below 5 is 3/7, since all of them are still available. Doing the arithmetic, you find that the total probability is 2/7. Hope this helps!

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alina1380 [7]
The answer is 8827, I hope that this helps.

5 0
3 years ago
A sphere is partially filled with air. If the volume of the sphere is increasing at a rate of 548 cubic feet per second, what is
Rama09 [41]

Answer:

  137/(36π) ft/s

Step-by-step explanation:

The rate of change of volume will be the product of the rate of change of radius and the area of the sphere. The area of the sphere is ...

  A = 4πr² = 4π(6 ft)² = 144π ft²

Then the relationship above is ...

  dV/dt = A·dr/dt

  548 ft³/s = (144π ft²)·dr/dt

  dr/dt = (548 ft³/s)/(144π ft²) = 137/(36π) ft/s ≈ 1.2113 ft/s

8 0
3 years ago
Find the sum of the finite geometric series: 5 + 10 + 20 + ... +81,920.
Anestetic [448]

Answer:

No solution

Step-by-step explanation:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by  2  gives the next term. In other words,  <em>a n +a1 ⋅ r n -1</em><em> </em>

Geometric Sequence:<em>  </em><em>r = 2</em>

The series given has a value of<em>  </em><em>r  </em>such that <em>r  >  1  or   r  <  −  1.</em> Therefore, the infinite sum cannot be calculated.<em> </em>

<em> </em>

<em> </em>

8 0
3 years ago
If it takes 8 inches of ribbon to make a bow,how many bows can be made from 3 feet of ribbon (1 foot = 12 inches)? Will any ribb
Aloiza [94]

First, find out how much ribbon there is.

3 x 12 = 36

Now, see how many times you can divde that by 8.

36 can only be divided by 8 four times, and there would be 4 inches of ribbon left.

So, you would be able to make 4 bows, with 4 inches of ribbon remaining.

8 0
3 years ago
What is the HCF of 96 and 108
mash [69]
The answer is 12 good luck;)
4 0
3 years ago
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