45. Find your percent correct on a test if you received 61 points out of 69 possible.
88.4%
49. Find your percent on a test if you received 42 points out of 80 possible.
52.5%
50. Scientific notation is most effective when used with _____
a. very small numbers
b. very large numbers
c. imaginary numbers
d. very large and very small numbers
D
45 and 49 are correct.
No idea about the last one.
The last one is correct, as well.
To find the percent correct on a test, divide the number of points earned by the total possible points and then multiply by 100.
For the first question:
Points earned = 61
Total possible points = 69
Percent correct = (61/69) * 100
Percent correct = 0.884 * 100
Percent correct = 88.4%
For the second question:
Points earned = 42
Total possible points = 80
Percent correct = (42/80) * 100
Percent correct = 0.525 * 100
Percent correct = 52.5%
To answer the third question about scientific notation, the most effective use of scientific notation is for representing very large and very small numbers. Therefore, the answer is option d.