a) 
The average speed is equal to the ratio between the total distance (
and the total time taken (
):
the distance travelled by the trucker in the first 3 hour can be written as the time multiplied by the velocity:
So the total distance is
The total time is equal to the first 3 hours + the time taken to cover the following 20 miles in the city:
So, the equation can be rewritten as:
b) 0.50 h (half a hour)
Since we know the value of the average speed, 
, we can substitute it into the previous equation to find the value of 
, the time the trucker drove in the city:
i think its not because it should increase so it would go diagonal
Answer:
f = 3 1/2
Step-by-step explanation:
f = 2t - 3f Substitute 7 for t
f = 2(7) - 3f Multiply
f = 14 - 3f
+3f + 3f Add 3f to both sides
4f = 14 Divide both sides by 4
f = 3 1/2
If this answer is correct, please make me Brainliest!
Answer:
Each side is 35.78 mm
Step-by-step explanation:
A square would have 4 equal sides. Since area of a square is x^2, where x is one side, we can write:
x^2 = 1280
x = 35.78 mm
Each side is 35.78 mm
