Answer:
Percentage of students who scored greater than 700 = 97.72%
Step-by-step explanation:
We are given that the College Board originally scaled SAT scores so that the scores for each section were approximately normally distributed with a mean of 500 and a standard deviation of 100.
Let X = percentage of students who scored greater than 700.
Since, X ~ N(
)
The z probability is given by;
Z = 
~ N(0,1) where, 
= 500 and 
= 100
So, P(percentage of students who scored greater than 700) = P(X > 700)
P(X > 700) = P( < 
) = P(Z < 2) = 0.97725 or 97.72% Therefore, percentage of students who scored greater than 700 is 97.72%.
Draw 10 28 times that will probably work
Answer:
2 rides per hour
Step-by-step explanation:
she rode 18 rides in 9 hours
therefore rate at which she rides = 18/9 = 2
Answer:
The work done is 4386.6 J.
Step-by-step explanation:
The work is given by:
Where:
F: is the applied force = 42 pounds
d: is the displacement = 85 feet
Since the force is applied at an angle (θ) of 25° with the horizontal we have:
Therefore, the work done is 4386.6 J.
I hope it helps you!
Answer:
(Some textbooks describe direct variation by saying " y varies directly as x ", " y varies proportionally as x ", or " y is directly proportional to x . ") This means that as x increases, y increases and as x decreases, y decreases—and that the ratio between them always stays the same.
