Answer:
D. 39%
Step-by-step explanation:
What you do is you take the .21 and the total of the 10th grade which is .54 and put it into a fraction like this .21/.54.
You will get .388 but rounded to the nearest percent is 39%.
A. 6082
B.120687
C.1188228
D.19042587
A^2 + b^2 = c^2
1^2 + b^2 = (sqrt(2))^2
1 + b^2 = 2
b^2 = 1
b = 1