I think the answer is the third one. I hope this helps, good luck!
Answer: 30X
Explanation:
Given that speed =30miles per hour(mph)
Time t= x hours(not given)
Distance covered= Speed × Time
Therefore, Distance=30× X
Distance=30X
The unit of distance is m
The equation to be used in relation to her time is 30X. Where X will be substituted for by time (t)
Answer:
Vertebrates are members of the kingdom Animalia and the phylum Chordata . Recall that animals that possess bilateral symmetry can be divided into two groups—protostomes and deuterostomes—based on their patterns of embryonic development. The deuterostomes, whose name translates as “second mouth,” consist of two major phyla: Echinodermata and Chordata. Echinoderms are invertebrate marine animals that have pentaradial symmetry and a spiny body covering, a group that includes sea stars, sea urchins, and sea cucumbers. The most conspicuous and familiar members of Chordata are vertebrates, but this phylum also includes two groups of invertebrate chordates.
Deuterostome phylogeny. All chordates are deuterostomes possessing a notochord at some stage of their life cycle.
Explanation:
