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Stels [109]
3 years ago
14

Without using a calculator, simplify Root of 20.

Mathematics
1 answer:
Leno4ka [110]3 years ago
5 0

Answer:

4.472135955 , is the answer. simplified to two decimal places it will be 4.47

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Assume that random guesses are made for eight multiple choice questions on an SAT test, so that there are n= 8 trials, each with
alina1380 [7]

Answer:

0.80589

Step-by-step explanation:

So all of the numbers of correct answers less than 4 are 0,1,2,3

We need to calculate the probability for each separately and then add them together.

To find the probability we have to first find the combination. We know that there’s n=8 trials and that p=0.3. So 1-0.3 gives us 0.7.

The combination formula is: ! / (!(−)!)

So the n would always =8, and the r would be 0,1,2,3. So you would have to calculate it for 0,1,2,3 Separately. This can be done by hand or you can use a simple combinations calculator online.

For 0;

The combination is 1,

1 x 0.3^0 x 0.7^8-0 =

0.057648

For 1;

The combination is 8,

8 x 0.3^1 x 0.7^8-1 =

0.19765

For 2;

The combination is 28

28 x 0.3^2 x 0.7^8-2 =

0.296475

For 3;

The combination is 56

56 x 0.3^3 x 0.7^8-3 =

0.254122

All that’s left is to add these four numbers;

0.057647 + 0.19765 + 0.296475 + 0.254122 = 0.80589

4 0
3 years ago
What does ∑11n=1(98−2n) equal?<br><br> Plz Help
Rasek [7]

Answer:n1-11

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Step-by-step I'm a retired math teacher so I know.

6 0
3 years ago
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Find the area of the parallelogram.
Ksivusya [100]
Area=14cm×6cm=84 cm²
..............................
5 0
3 years ago
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Use the net to find the surface area of the regular pyramid.
Svetradugi [14.3K]

Answer:

7 or 7^{2}

Step-by-step explanation:

Each triangle has the surface area of 1.5, because 1 * 3 = 3 / 2 = 1.5. You divide by two because it is half a rectangle instead of a full one. You multiply by four which would get you 1.5 * 4 = 6. The square in the middle has the surface area of 1 because 1 * 1 = 1. So you would get 7.

6 0
2 years ago
NEED IT ASAP<br>Find the missing side. <br>3 is A^2 <br>5 is B^2<br><br>what is the missing side ​
nignag [31]

Answer:

5.83

Step-by-step explanation:

Use the Pythagorean theorem:

3^2+5^2 = c^2

34 = c^2

sqrt34 = c

5.83 = c

4 0
3 years ago
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