Class Frequency Mid-point
13-15 7 13+15/2=20.516-18 4 16+18/2=1719-21 3 19+21/2=2022-24 5 22+24/2=2325-27 7 25+27/2=2628-30 7 28+30/2=29
(16+18)/2 = 17
So, the answer is A (17).
Equals 1 over 7 because 63/9 is 7. The answer is 1/7
The cladogram that shows the relationship between the organisms is <em>Option D</em>, as attached.
<em>Option D</em> of the attached cladogram shows that birds and reptiles are related since both lay hard-shelled eggs. It also shows the relationship between birds, reptiles, and frogs, which each have four limbs. Finally, birds, reptiles, frogs, and fish with jaws are related. Note that the bird's wings are regarded as limbs.
Thus, the cladogram that depicts the relationship among these organisms is <em>Option D.</em>
Learn more about cladograms and relationships between groups here: brainly.com/question/1264312
Answer:
a = 5
Step-by-step explanation:
3(a - 4) + 1 = 9 - a Distribute the 3 into a-4
3a - 12 + 1 = 9 - a Combine like terms
[-12 and 1]
3a - 11 = 9 - a Add 11 to both sides to isolate 3a
+11 +11
3a = 20 - a Add a to remove it and have all a
+a +a
4a = 20 Divide by 4 to only have a
/4 /4
a = 5