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%.
Answer:
Slope? If so it is 13/-6
Step-by-step explanation:
Use y1-y2/x1-x2
There is a special right triangle in this picture ( with angles 30°- 60°- 90° ). Sides of that triangle are: a, a/2 and a√3/2.
a = 10
h = a/2
h = 10/2 = 5
Answer: A ) 5 inches
Answer:
Angle EDH = 50°
Step-by-step explanation:
The picture above is the rectangle formed from the illustration above. The angle EDH is given as 5x° and angle HDG is given as 4x° . The angles EDG and FGD are right angles . That means both angles are equivalent to 90° .
Angle EDH = 5x°
Angle HDG = 4x°
Angle EDG = 90°
Therefore,
5x + 4x = 90
9x = 90
divide both sides by 9
x = 90/9
x = 10°
Angle EDH = 5x = 5 × 10 = 50°
15 cookies burned. 3/4 Is equal to 75% so you want to take 75% of 20. OF always mean multiply, but first we divide by 100 to get it into a decimal so 0.75 X 20 equals 15 (if you punch into calculator) so only 5 cookies are not burned. but the 3/4 that for burnt were the other 15
