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tatyana61 [14]
3 years ago
9

STUCK ON THESE!!! PLEASE HELP!

Mathematics
2 answers:
natita [175]3 years ago
7 0

Answer:

_20___ × (-1/2) × __2__ = -20

8 x (-1/2) x 5= -20

Step-by-step explanation:

Hope I helped

DIA [1.3K]3 years ago
3 0
-80 , 1/2 is the answer
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How does the experimental probability of choosing a yellow tile compare with the theoretical probability of choosing a yellow ti
Evgen [1.6K]

Answer:

The experimental probability is the same as the theoretical probability.

Step-by-step explanation:

The given data is:

color            observed frequency               relative frequency

Red                            15                                          3/10

Blue                           12                                          6/25

Green                         8                                           4/25

Yellow                        10                                          1/5

Purple                         5                                           1/10

The experiment was repeated 50 numbers of times.

Solution:

Theoretical probability is basically what is expected to happen without experimenting and experimental probability is what actually happens as a   results of an experiment.

Theoretical probability =  favorable outcomes / all possible outcomes

Experimental probability = no. of times outcome occurs / no. of times

                                                                                      experiment is performed The experimental probability  and theoretical probability are same i.e. 1/5

This can be seen from the table:

Experimental probability = 1/5

As the experiment is performed 50 times and the outcome (yellow tile) occurs 10 times so using the formula of experimental probability:

10/50 = 1/5

Now as given, there are 5 number of tiles (red,blue,green,yellow,purple) so number of possible outcomes is 5. Yellow tile among these 5 tiles is 1. So the favorable outcomes is 1. So looking at the given formula of theoretical probability:

1/5

So

experimental probability = 1/5

theoretical probability = 1/5

Hence the experimental probability is the same as the theoretical probability.

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Answer:

Step-by-step explanation:

6+3=9/50

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Find the variable of x. <br> 8x-2=-9+7x
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Answer:

8x-2=-9+7x equals X=-7

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