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uranmaximum [27]
3 years ago
5

How many ways can four items be selected from a group of seven items?

Mathematics
1 answer:
Neko [114]3 years ago
4 0
7!/(7-4)! = 840 ways

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50 POINTS!!!!!!
spin [16.1K]
Answer:
The experimental probability is 1/6, and the theoretical probability is 1/4. The theoretical probability is greater than the experimental probability in this trial.
-------------------
Explanation:

Theoretical probability is the mathematically calculated probability of the circumstances occurring. 

There is a 1/2 chance of rolling an even number, and a 1/2 chance of flipping a coin on heads.

Since the question asks for the possibility of both happening, multiply those together to find the probability:

\frac{1}{2} *   \frac{1}{2} =  \frac{1}{4}

The theoretical probability of rolling an even number and then flipping a head is 1/4.

Now we'll focus on Taka's trials.

Experimental probability is the probability that is taken from results of a trial.

Take the results, and see if they match the criteria of rolling an even number and flipping heads.

The results that are bolded fit the criteria:
<span>1 H, 4 T, 1 H, 5 T, 2 H, 3 T, 6 T, 2 H, 3 T, 5 T, 3 H, 4 T
</span>
Taka managed to roll and flip the coin to fit the criteria 2 times out of 12. Converted into a fraction, it is 2/12. Simplified, the experimental probability is 1/6.
3 0
3 years ago
the mode (rounded to the nearest tenth if needed) of the following data set is 30,29,40,51,39,33,24,60,40,35,58
scoray [572]
The mode is the number that occurs the most in the sequence of numbers, so the mode is 40 since that number is repeated the most in the sequence, 2 times.
7 0
3 years ago
Read 2 more answers
What is six over eight plus four over eight
solniwko [45]
Answer: 5/4

Explanation:
We have the same denominator so we can just add the numerator.

= 6/8 + 4/8
=10/8
10/8 can be simplified
=5/4
5 0
3 years ago
Solve for the value of z.
Yuki888 [10]

z=18

3z+4+2z-4+90=180

5z+4-4+90=180

5z+90=180

5z=90

z=18

4 0
3 years ago
Factor 3/4 out of 3/4z+6.
Bingel [31]

Answer:

Step-by-step explanation:

5 0
3 years ago
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