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jok3333 [9.3K]
2 years ago
14

When we calculate the standard deviation, one of the intermediary steps is to subtract the mean from each data value. We do this

because:.
Mathematics
1 answer:
Dmitry_Shevchenko [17]2 years ago
3 0

we want correct answer because it will lead or make your standard deviation goes directly

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Express the following as Decimal place 75%
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Step-by-step explanation:

75% = 75/100 = 0.75

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I need help getting the answer for the 1st question
Karo-lina-s [1.5K]
If we have two similar triangles:
Triangle 1 (base 1 , height1).
Triangle 2 (base 2, height 2)
Then:

base 1 /height 1=base 2 /height 2

Data:
base 1=0.2 m
height 1= 1 m
base 2= 8 m
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We calculate the height of the tower:
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3 0
3 years ago
*15 points easy question*
maw [93]

Answer:

\sqrt{13}

Step-by-step explanation:

We are given an isosceles triangle. We need to remember the important rule that the base angles are equal. In this question we need to find the value of 'x' using a perpendicular height of 3 and a base length of 4. In this question we can half the triangle in half to help us find the value of x. Also we need to use Pythagoras theorem to help us find 'x'. Pythagoras states that a² + b² = c² so we want to find the hypotenuse of the triangle. If we half the triangle we get 2 triangle both with a base length of 2 and a perpendicular height of 3 so,

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→ a² + b² = c²

⇒ Substitute in the values

→ 3² + 2² = c²

⇒ Simplify

→ 9 + 4 = c²

⇒ Simplify further

→ 13 = c²

⇒ Square root both sides to find the value of 'c'

→\sqrt{13}  =  c

The value of x is the square root of 13

8 0
3 years ago
If 7 is added to a number then it becomes at least 15 what is the number?​
Whitepunk [10]
You’re answer will be 8 ;)
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3 years ago
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