is the score of Jonathan.
<h3 /><h3>What is percentage?</h3>
Percentage, which may also be referred to as percent, is a fraction of a number out of 100%. Percentage means "per 100" and denotes a piece of a total amount.
To calculate the percentage , Use the percentage formula:
According to the question:
Sarah scored on the spelling test = 
Jonathan scored = 75%
By formulating both the values;
=
Therefore , is the score of Jonathan.
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Answer & Explanation:
To find the direction cosines of the vector a is need to divided the corresponding coordinate of vector by the length of the vector. The coordinates of the unit vector is equal to its direction cosines. Property of direction cosines. The sum of the squares of the direction cosines is equal to one.
Add 9 to both sides
x-9=0
x-9+9 = 0+9
x = 9
