Answer:
5x - y = 9
Step-by-step explanation:
the equation of a line in standard form is
Ax + By = C ( A is a positive integer and B, C are integers )
given
y = 5x - 9 ( subtract 5x from both sides )
- 5x + y = - 9 ( multiply through by - 1 )
5x - y = 9 ← in standard form
Let the width be x, then length = 4x - 7
Perimeter = 2(length + width)
2(x + 4x - 7) = 46
2(5x - 7) = 46
10x - 14 = 46
10x = 60
x = 6
Therefore, width is 6 and length is 4(6) - 7 = 24 - 7 = 17
I think the answer is :
3x^2 + 2 - x
i hope this helps :)
Answer:
--- The third quartile
-- Variance
Step-by-step explanation:
Given
-- First quartile
--- Median
--- Mean
--- Coefficient of skewness
Solving (9): The third quartile 
This is calculated from

So, we have:

Cross Multiply

Open bracket

Collect like terms


Divide both sides -1.38

--- approximated
Solving (b): The variance
First, calculate the standard deviation from:


So:


Make SD the subject






So, the variance is:

