A wind turbine that ERCOT operates (even though it doesn't work in freezing weather when we REALLY need it) uses guy wires for support. In the figure, AC = 15 ft, ∡ABC = 60°, ∡ADC = 45°, and ∡AEC = 30°. AB =

AD =

AE =

Height of the turbine (EC) =

b

step-by-step explanation:

47 - 90 = 43

43 - 180 = x

x = 137

b segment jm is correct i think

graph #4 (last graph) depict the function   f(x)= -m(x-d)^1/5 i

step-by-step explanation:

we know that

m=slope

but in this function slope is -m that means slope is decreasing and it is decreasing by 1/5 points down the x-axis.

which is shown in graph four

a decreasing slope down x-axis by 1/5 points.

hence 4th graph is the right option for this.