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Ira Lisetskai [31]
3 years ago
11

If three coins are tossed, what is the number of equally likely outcomes? 3 4 6 8 9

Mathematics
1 answer:
strojnjashka [21]3 years ago
4 0
I think it's 3, 6, and 9
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HELP ASAP 10 POINTS TO BRAINLIEST
Brilliant_brown [7]

Answer:

15%

Step-by-step explanation:

The cost of 2 adults and 2 children without the discount is

2 adults = 2 (55) = 110

2 children = 2 (45) = 90

Total cost = 110+90 = 200

The original price is 200 and the new price is 170

Percentage discount = (Original price - new price)/ original price * 100%

                                     = (200-170)/200 * 100%

                                     = 30/200 * 100%

                                     = .15 * 100%

                                     = 15%

6 0
3 years ago
4 2/3 x 4/5 x 8 1/3 =
Sliva [168]

the answer is a repeating decimal 31.1111111111 but just put 31.1

5 0
3 years ago
What equals 1050 in multiplication?
kakasveta [241]
There is multiple possibilities:

<span>1050 equals 1 times 1050

1050 equals 2 times 525

1050 equals 3 times 350

1050 equals 5 times 210

1050 equals 6 times 175

1050 equals 7 times 150

1050 equals 10 times 105

1050 equals 14 times 75

1050 equals 15 times 70

1050 equals 21 times 50

1050 equals 25 times 42

1050 equals 30 times 35

1050 equals 35 times 30

1050 equals 42 times 25

1050 equals 50 times 21

1050 equals 70 times 15

1050 equals 75 times 14

1050 equals 105 times 10

1050 equals 150 times 7

1050 equals 175 times 6

1050 equals 210 times 5

1050 equals 350 times 3

1050 equals 525 times 2

1050 equals 1050 times 1</span>
8 0
3 years ago
Read 2 more answers
An instructor in a college class recently gave an exam that was worth a total of 100 points. The instructor inadvertently made t
solniwko [45]

Answer:

B) Method 2 will increase the standard deviation of the students' scores.

Step-by-step explanation:

Given that an instructor in a college class recently gave an exam that was worth a total of 100 points.

The average score for his students was 43 and the standard deviation of the scores was 5 points.

And now he is considering two different strategies for rescaling the exam results of which:

Method 1 = Add 17 points to everyone's score.

Method 2 = Multiply everyone's score by 1.7 .

And we have to check what will be the impact of these methods on the standard deviation of the students' scores.

For this let us consider a simple example to understand this:

Firstly, Formula for calculating Standard Deviation =  \sqrt{\frac{\sum (X-Xbar)^{2}}{n-1}}

Suppose,

     X             X - Xbar       (X - Xbar)^{2}

     3              3 - 6 = -3         -3 * -3 = 9

     5              5 - 6 = -1          -1 * -1 = 1

     10            10 - 6 = 4          4 * 4 = 16

<em>Mean of above data, Xbar</em> = \frac{3+ 5+10}{3} = 6

<em>Standard Deviation of data </em>= \sqrt{\frac{26}{3-1} } = 3.6055

Now let us suppose that we multiply each value of above data with 2 so the new data will be:

     X                X - Xbar           (X - Xbar)^{2}

 3*2 = 6        6 - 12 = -6         -6 * -6 = 36

 5*2 = 10       10 - 12 = -2       -2 * -2 = 4

10*2 =20      20 - 12 = 8         8 * 8 = 64

<em>Mean of new data, Xbar </em>= \frac{6+ 10+20}{3} = 12

<em>Standard Deviation of new data</em> = \sqrt{\frac{104}{3-1} } = 7.2111

<em>Hence, we see that when we multiply any value to the data the standard deviation will increase and in other words it will multiplied by that value which value we multiplied with each data value i.e. when we multiply each data value with 2 the standard deviation also get multiplied by as </em>

  3.6055 * 2 = 7.2111

Therefore option B is correct that Method 2 will increase the standard deviation of the students' scores.

<em>And on the other hand Similarly by adding any constant to the data the Standard Deviation will remain same. Therefore Method 1 will have no impact on standard deviation of the students' scores.</em>

8 0
3 years ago
Find the slope of the line that passes through (6, 9) and (4, 14).
Veronika [31]

Answer:

The slope is -5/2 :)

Step-by-step explanation:

5 0
3 years ago
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