Mean: xbar = (∑i=1...10 xi)/10 = (61 + ... + 100)/10 = 84.4 Sum Of Squares in X SSX = ∑i (x - xbar)2 = (61 - 84.4)2 + ... + (100 - 84.4)2 = 1364.4 Standard deviation Sample: s = √[SSX / (10 - 1)] ≈ 12.3 Population: σ = √(SSX / 10) ≈ 11.7
Y = mx + b
m is the slope, or the constant rate of change
b is the y intercept, or the initial value
y = 55x + 10
Hope this helps!
The answer is 2, 4, 8 and 16 (added=$30)
Take $14 from the highest amount = $2 for that envelope
Double the original $2 = $4
Double the $4 = $8
Double the $6 = $16
Thus, $2,4,8,16, but all in different envelopes
Answer:
Therefore the required value of x,

Step-by-step explanation:
Given:
ΔBC is a Right Angle Triangle at ∠ B = 90°
As ∠ B = 90° , AC will be the Hypotenuse
AC = 10 = Hypotenuse
BC = y = Longer leg ( say )
AB = x = Shorter leg ( say )
To Find :
x = ?
Solution:
In Right Angle Triangle Δ ABC , By Pythagoras Theorem we get

Substituting the given values we get

Therefore the required value of x,

THIS IS NOT A LINK USE THE DESMOS GRAPHING CALCULATOR