a. Attached
b. Sure looks linear.
c. Line drawn. x=50 years, y=38 hours. Answer: about 38 hours
d. y=40 hours, x=55 years. Answer: about 55 years old
Answer:
79.4% (when rounding to the nearest tenth)
Step-by-step explanation:
81:102 = x:100
Cross multiple to get 8100=102x
Divide 8100 by 102
Round to the nearest tenth to get 79.4%
Ethan's mistakes in sorting the shapes into two groups are:
- Shape C does not belong to group 1 because it does not have square corners
- Shape F does not belong to group 2 because it does not have any square corners
<h3>How to spot the mistakes?</h3>
From the complete question (see attachment), the shapes are grouped using the following criteria:
- All the shapes in group 1 have 4 square corners
- All the shapes in group 2 have exactly 1 square corner
Using the above rules, Ethan's mistakes are: shapes C and F are placed in the wrong groups
Read more about sorting at:
brainly.com/question/15049854
#SPJ1
The second answer is correct.