John walked a distance of 900 meters in 10 minutes what was his average speed in kilomerters per hour

Asap 1. which surface feature of the moon is characterized by mountainous areas? question options: maria terrae regolith craters 2.which statement describes surface features called maria on the moon? question options: layers of dust and rock deep areas of cooled lava deep, rocky and barren valleys highlands and mountainous areas

An object has a weight of 500 on earth what is the mass of this object

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.