The residual value when x = 4 is 6.72 if the line of best fit to be y = 2.78x – 4.4
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more number and variables.
Given the function:
y = 2.78x - 4.4
When x = 4:
y = 2.78(4) - 4.4 = 6.72
The residual value when x = 4 is 6.72 if the line of best fit to be y = 2.78x – 4.4
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Step-by-step explanation:
Hi there :-)
The formula of the simple interest is
I=prt
your question ask to find r which is interest rate you do that by dividing each side by (pt) to get
R=I÷pt
Now solve to get the interest rate
R=562.5÷(1,500×5)
R=0.075×100 multiply by 100 to get it as percentage
R=7.5%
Hope it helps:-)
1) A. since, if you put the numbers into the equation (one at a time) the equation = 0 each time, which is true.
2) I think I've been taught to complete the square slightly differently
x^2 - 18x - 17 = 0
(x-9)^2 - 81 -17 = 0
(x-9)^2 - 98 = 0
I hope you can get something from that
