to see quick score she must use a pie chart
Using the general form; y = mx + b, we get:
y = 4x + 6
Answer:
t = 4 h
Step-by-step explanation:
Painter A initial fee 40 $ and each hour charge 45 $
Painter B initial fee 100 $ and each hour charge 30 $
The equations for painters are straight lines.
The initial fee is the intercept of the line with the y-axis ( painters receive 40 and 100 $ respectively and they have done nothing.
The equation for a straight line is:
y = m*x + b where m is the slope and b the intercept with the y-axis
Then
Painter A when x = 0 y = b = 40
And each hour of work cost 45 $ then f x = t in hours
The equation for Painter A is y = 45*t + 40
Similarly, the equation for Painter B is
y = 30*t + 100
We have a two equations system, the solution will indicate when the two painters will charge the same amount of money
y = 45*t + 40 (1)
y = 30*t + 100 (2)
Equation 1 - equation 2
0 = 15*t - 60
15*t = 60
t = 60/15
t = 4 h
55(₄85x-551=45) i think thats the answer but i dont think so
Answer:
Step-by-step explanation:
The correlation coefficient being negative means that the tendency of the dots in the plane is a negative slope; the coefficientof determination tells you how close the dots are to being on the linear regression equation. This vaue falls between 0 and +1. This value will never be negative; the answer is false.
