kaykayhodge
28.03.2020 •
Mathematics
Write the equation of the line that passes through the point (1,-5) and is perpendicular to the line y=1/8x+2.
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Ответ:
y = -8x + 3
Step-by-step explanation:
Step1: find the slope
y = 1/8x + 2
Equation of a line is
y = mx + c
m - slope
From the equation given,
m = 1/8
Note : if two lines are perpendicular to the other, both lines are negative reciprocal of each other
m = -8
Step2 : using the point slope form
y - y1 = m( x - x1)
( 1 , -5)
x1 = 1
y1 = -5
y - (-5) = m( x - 1)
y + 5 = -8(x - 1)
y + 5 = -8x + 8
y = -8x + 8 - 5
y = -8x + 3
The equation of the line is
y = -8x + 3
Ответ:
(0.30, 0.42)
Step-by-step explanation:
Given the following :
Sample proportion = 0.36
Minimum sample proportion from simulation = 0.28
Maximum sample proportion from simulation = 0.40
Therefore ;
Range = (maximum sample proportions from simulation - minimum sample proportion from simulation)
Range = 0.40 - 0.28 = 0.12
Interval estimate of true population = sample proportion ± 0.5 (range)
0.36 ± 0.5(12)
0.36 ± 0.06
(0.36 - 0.06), (0.36 + 0.06)
(0.30, 0.42)