A commuter train travels 40 kilometers in 33 minutes. what is its speed in kilometers per hour

Units: ( km / min) * (min / hr) = km / hr

(The units for minutes cancel each other out)

Speed = (68 km / 33 min) * (60 min / 1 hr) = 123.6 km/hr

Step-by-step explanation:

Good question - this is going to be a unit conversion-type question.  What we have is two different units of time, which we'll have to convert between, knowing the fact that 60 minutes = 1 hour.

Hope that helps!

"image"

step-by-step explanation:

in most of these problems, the notation is that the point with a "prime" is the image of the point without. that is, b' is the image of b.

here, there is no dilation or reflection. there is simply translation (with no direction shown). which figure you call the "preimage" and which one you call the "image" is up to you. as a matter of convention, the naming is as described above.

↓↓↓↓↓↓↓↓↓

step-by-step explanation:

this is a parabola.