A six foot tall man casts a shadow that is 10 feet long. if a tree next to the man casts a 25 foot shadow. how tall is the tree?
1 answer:
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Answer:
Step-by-step explanation:
[...] if you can write the LHS as a perfect square, or if you can't spot a factorization of it right away, if and only if the discriminant (or, if b is an even number, 1/4 of it) is zero.
<u>I see it! I see it!</u>
Stare at it for a while. First term is , third term is
, we are missing a double product, but we can play with k. For the LHS to be
you just need
.
<u>I don't see it...</u>
Then number crunching it is. Set the discriminant to 0, solve for k
Answer:
(a) 83% of the scores were at or below her score.
(b) 17% was above her score.
Step-by-step explanation:
Given that:
Percentile score of Angela in the general aptitude test = 83rd percentile
To find:
a) Percentage of scores which were at or below her score?
b) Percentage of score which were above her score?
Solution:
First of all, let us learn about the term "<em>Percentile</em>"
Percentile is the value below which the certain percent of people/marks fall.
Therefore, when we say percentile of someone's score is , then there are
of scores are at the same level or below.
And of the scores are above this level.
Therefore, we can say that:
83% of the scores were at the same level or below the score of Angela.
And of the scores were above the score of Angela.