Answer:
x = 15
Step-by-step explanation:
Using the Altitude- on- Hypotenuse theorem
( leg of large Δ )² = ( part of hypotenuse below it ) × ( whole hypotenuse )
x² = 9 × 25 = 225 ( take the square root of both sides )
x =
= 15
Answer:
2.897
Step-by-step explanation:
Let us find the mean and variance for the sample first.
105 104 110 112
114 106 108 109
Mean = sum/8 = 108.5
Variance = 12
Std dev = sq rt of variance = 3.464
Std error = std dev/ sq rt n
since n =8, we get std error = 1.225
Since sample size is small, df =8-1 =7
For 95% confidence intervals, t critical value for two tailed=2.365
Margin of error = std error x t critical = 1.225(2.365)
=2.897
y = -
x - 3
the equation of a line in ' slope intercept form ' is
y = mx + c
where m is the slope and c the y-intercept
here m = -
and c = - 3
thus y = -
x - 3 is the slope- intercept equation
You just add up all of the sides to find the x