Answer:80
Step-by-step explanation:
Use Pythagoras theorem

Two triangles are similar

(6+3)*12/2 - 6*8 /2 = 30
Answer:
456
Step-by-step explanation:
Let X be the SATscore scored by the students
Given that X is normal (1000,200)
By converting into standard normal variate we can say that
is N(0,1)
To find the top 10% we consider the 90th percentile for z score
Z 90th percentile = 1.28

i.e. only students who scored 456 or above only should be considered.
Answer:
D. 4
Step-by-step explanation:

66% divided by 365 days is the answer i think