Answer:Let x and (x-3) represent Elvira's and David's times respectively
D = r*t
Distances traveled are equal in this example***
14mph*x = 21mph(x-3)
solving for x
14x = 21x - 63
63 = 7x
x = 9hr, the time that Elvira traveled. David traveled 6hrs (9hr-3hr = 6hr)
CHECKING our Answer***
14mph*9hr = 126mi = 21mph*6hr = 126mi
Step-by-step explanation:
Answer:
11.4591559
Step-by-step explanation:
I wasn't sure what place it needed to be rounded too, but above is the result. (I also used the pi key)
Answer: 0+0.0+0.00+0.000+0.0001
Step-by-step explanation: Break it down into pieces and add them together.
Answer:
42 unit²
Step-by-step explanation:
the hexagon is made up of 2 triangles, both have base 7 and height 2, and one middle rectangle with width 7 and length 4
area = (2 x 7) / 2 x 2 + 4 x 7 = 14 + 28 = 42
