What did Tyler do wrong?
1 answer:
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Answer:
The distance from hot air balloon to the ground .
Step-by-step explanation:
Labelled diagram of given scenario is shown below.
Given that,
An angle of elevation of Hot air balloon by Angie is °.
When she stepped back then angle of elevation was
°.
Height of Angie is .
To find: How far off the ground is a hot air balloon.
So, from figure
Height of Angie
In triangle Δ,
⇒
⇒ ....................(1)
Now, In triangle Δ
⇒
⇒
Here, substituting the value from Equation (1) we get,
⇒
⇒
⇒
Now, finding the value of from equation (1)
Therefore Length of =
.
Hence,
The distance from hot air balloon to the ground .
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%.