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bazaltina [42]
3 years ago
8

To​ ​ get​ ​ an​ ​ accurate​ ​ result,​ ​ a​ ​ sample​ ​ size​ ​ must​ ​ be

Mathematics
1 answer:
levacccp [35]3 years ago
8 0
At least 30 ..................
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GENIUS OR ANYONE HELP ME PLZ PLZ PLZ!!!!
sukhopar [10]

Answer:

\frac{16}{4}, \frac{22}{7},\sqrt{5}, \sqrt{3}

Step-by-step explanation:

i got it right

8 0
3 years ago
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State one form of the Law of Cosines and provide a trick for writing the other two forms and explain when Law of Cosines should
Yuki888 [10]

Solving for <em>Angles</em>

\displaystyle \frac{a^2 + b^2 - c^2}{2ab} = cos∠C \\ \frac{a^2 - b^2 + c^2}{2ac} = cos∠B \\ \frac{-a^2 + b^2 + c^2}{2bc} = cos∠A

* Do not forget to use the <em>inverse</em> function towards the end, or elce you will throw your answer off!

Solving for <em>Edges</em>

\displaystyle b^2 + a^2 - 2ba\:cos∠C = c^2 \\ c^2 + a^2 - 2ca\:cos∠B = b^2 \\ c^2 + b^2 - 2cb\:cos∠A = a^2

You would use this law under <em>two</em> conditions:

  • One angle and two edges defined, while trying to solve for the <em>third edge</em>
  • ALL three edges defined

* Just make sure to use the <em>inverse</em> function towards the end, or elce you will throw your answer off!

_____________________________________________

Now, JUST IN CASE, you would use the Law of Sines under <em>three</em> conditions:

  • Two angles and one edge defined, while trying to solve for the <em>second edge</em>
  • One angle and two edges defined, while trying to solve for the <em>second angle</em>
  • ALL three angles defined [<em>of which does not occur very often, but it all refers back to the first bullet</em>]

* I HIGHLY suggest you keep note of all of this significant information. You will need it going into the future.

I am delighted to assist you at any time.

7 0
3 years ago
HURRRYYYYYY Solve for t. 4/3 = t/7
VladimirAG [237]

Answer:

Step-by-step explanation:

4/3 = t/7

Multiply by 7 on both sides

4/3 x 7 = t

28/3 = t

3 0
3 years ago
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Ten increased by the quotient of a number and 2 is -15
Vlad1618 [11]
2x +10 = -15

2x = -25

2x/2 = -25/2

x = -25/2

hope this helps
6 0
3 years ago
What is a diameter and what is a radius?
Mrac [35]

Radius is the length of the line segment from the center of the circle to an endpoint on the circle and diameter is twice the length of the radius of the circle.

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2 years ago
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