Dana surveyed students in her class. She found that 8 earned an A, 6 earned a B, 4 earned a
1 answer:
Answer:
0.4
Step-by-step explanation:
Given:
Dana found that 8 students earned an A, 6 students earned a B, 4 students earned a C, and 2 students earned a D on the last science test.
To find:
the experimental probability that the student would have earned an A in the test
Solution:
Probability refers to the chances of occurrence of some event.
Number of students who earned an A in the test = 8
Total number of students = 8 + 6 + 4 + 2 = 20
The experimental probability that the student would have earned an A in the test = Number of students who earned an A in the test / Total number of students =
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Answer:
B. 152 cm²
Step-by-step explanation:
To find the surface area using a net, do this:
Take apart the figure. We see that there are three rectangles and two triangles. Find the area of each () and then add the values together:
The first rectangle on the left is the same as the one on the right.
Two measures are 40 cm².
The middle rectangle is:
48 cm²
The formula for the area of a triangle is :
The area of the two triangles is 12 cm².
Now add the values:
The area of the figure is 152 cm².
:Done