Can someone help me with this problem it's rely confusing?!?
2 answers:
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Answer:
The equation of the line is 7 x +5 y = 15.
Step-by-step explanation:
Here the given points are ( 5, -4) & ( -10, 17) -
Equation of a line whose points are given such that
( ) & (
)-
y - =
( x -
)
i.e. <em>y - (-4)= ( x- 5)</em>
<em> y + 4 = ( x - 5)</em>
<em> y + 4 = ( x - 5 )</em>
<em> ( y + 4) = ( x - 5)</em>
<em> 5 (y + 4 ) = - 7 (x - 5 )</em>
<em> 5 y + 20 = -7 x + 35</em>
<em> 7 x + 5 y = 15</em>
Hence the equation of the required line whose passes trough the points ( 5, -4) & ( -10, 17) is 7 x + 5 y = 15.
Answer:
B: 80%
Step-by-step explanation:
24 ÷ 30
= = 80%
Answer:
Standard error = 0.83
Step-by-step explanation:
Given that the heights in inches of males in the united states are believed to be approximately normally distributed with mean u
Sample mean for 25 adults randomly taken =
inches
Std deviation of sample s = inches
Since X the height of males is Normal we find that the sample mean also will follow a normal distribution.
By central limit theorem, mean of x would be= sample mean= 69.72
Std error =
Standard error of the mean = std dev/square root of sample size.
Here only sample std deviation is known
So we used it
Standard error = 0.83