Answer:
C
Step-by-step explanation:
It's stated that EFI is dilated by a scale factor of 1/3.
Dilating gives the following
FH = 1/3×FE
FG = 1/3×FI
HG = 1/3×EI
Sense ΔEFI is reflected over a line FG/FH = (1/3×FI)/(1/3×FE) = FI/FE
Notice that the following shows triangle similarity, meaning ΔEFI ~ ΔHFG.
The only answer choice that shows this would be FE/3 = FH, FI/3 = FH, and
EI/3 =HG ΔEFI ~ ΔHFG.
Answer: B 0.5 kWh per day
Step-by-step explanation:
Since the graph represents the function where electricity usage in kilowatts per hour of a clock radio varies directly with the number of days it is plugged into the wall current
The constant of variations will be the gradient ( slope ) of the graph.
Gradient = (Y2 - Y1)/(X2 - X1)
Where X1 = 2, X2 = 6, Y1 = 0.5, Y2 = 1.5
Substitute all the values into the formula
Gradient = (1.5 - 0.5)/( 6 - 4 )
Gradient = 1/2
Gradient = 0.5.
Therefore, a reasonable estimate of the constant of variation is 0.5 kWh per day
Answer:
4
Step-by-step explanation:
3/4(x+8)=9
3/4x+6=9
3/4x=3
x=4
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Answer:
The linear equation is the equation of straight line. where m is the slope of the line and c is the y-intercept. Thus, the y-intercept is expressed as (0, c). That is where the graph intercepts the y-axis (thus, the x value would be 0).
Step-by-step explanation:
