The graph below describes the journey of a train between two cities. 120
a) Work out the
acceleration, in km/h?,
in the first 15 mins.
100
80
b) Work out the distance
between the two cities. $60
Velocity (in km/h)
40
c) Work out the average
speed of the train during 20
the journey
0

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1

sine

step-by-step explanation:

70.30

step-by-step explanation:

1/6

step-by-step explanation: