Answer:
EF = 10
Step-by-step explanation:
DE + EF = DF
5x + x + 8 = 20
6x = 20 - 8
6x = 12
x = 12/6
x = 2
EF = x + 8 = 2 + 8 = 10
Answer:
How long will it take to hear the rumbling of a volcano located 58km away?
Step-by-step explanation:
P = 2(l+w)
substitute in the knowns
90 = 2(27+w)
divide by 2
90/2 = 2/2 *(27+w)
45 = 27+w
subtract 27 from each side
18=w
w = 18ft
To graph these equations, you would have to put them into slope-intercept form (y=mx+b) and then graph. Since you get two points from graphing the equation, just add another by choosing a spot where the line intercepts on the graph.
Example: