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barxatty [35]
3 years ago
12

What is the variance of 4,7,5,9?​

Mathematics
2 answers:
sergey [27]3 years ago
8 0

Step-by-step explanation:

hope this helps

Ierofanga [76]3 years ago
3 0

Answer:

4

Step-by-step explanation:

took the test lololololololol lololololololol

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Evaluate the funtion for x = -4n.
Artemon [7]
I got B for my answer. 
3 0
3 years ago
Explain how the Quotient of Powers Property was used to simplify this expression.
Simora [160]

Answer:

The answer is option 2, by simplifying 9 to 3² to make both powers base 3 and subtracting the exponents.

Step-by-step explanation:

You have to make the expressions into the same base :

\frac{ {3}^{4} }{9}  =  \frac{ {3}^{4} }{ {3}^{2} }

Next, you have to apply Indices Law :

{a}^{m}  \div  {a}^{n} \: ⇒ \: {a}^{m - n}

{3}^{4}  \div  {3}^{2}

=  {3}^{4 - 2}

=  {3}^{2}

7 0
2 years ago
Help me please!!!!!!! ​
gulaghasi [49]

Answer:

1/9

Step-by-step explanation:

Because

P(both socks are white)= 2/18

4 0
2 years ago
If there is 100 students how much would 40% be
I am Lyosha [343]

Answer: 40 students.

Step-by-step explanation:

To solve this problem you mmust apply the steps shown below:

1. You know that there is a total of 100 students, then you can say that the 100% is 100 students.

2. Then, to calculate how much would 40% be, you must multiply 100 students by 40% which you rewrite as a decimal by dividing it by 100, as following:

40%/100=0.4

Then 40% of the students would be

100 studens*0.4=40 students

3 0
3 years ago
Read 2 more answers
A pole 5 feet tall is used to support a guy wire for a tower, which runs from the tower to a metal stake in the ground. After pl
sammy [17]

The length of the guy's wire to the nearest foot is 89 feet.

The situation forms a right-angled triangle.

<h3>Properties of a right angle triangle:</h3>
  • A right-angle triangle has one angle of 90 degrees.
  • The sides can be found using the Pythagoras theorem.
  • The angles can be found using trigonometric ratios.

The hypotenuse of the triangle is the length of the wire.

let's use the smaller triangle to find the angle opposite the tower. Therefore,

tan ∅ = opposite / adjacent

tan ∅ =  5 / 2

∅ = tan⁻¹ 2.5

∅ = 68.1985905136

∅ = 68.20°

Therefore,

cos 68.20 = adjacent / hypotenuse

cos 68.20 = 33 / hypotenuse

hypotenuse = 33 / cos 68.20

hypotenuse = 88.8606843161

Therefore,

length of wire ≈ 89 feet.

learn more on triangles here; brainly.com/question/25762788?referrer=searchResults

4 0
2 years ago
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