How can 65% be broken down with friendly percents to find 65% of a number?
2 answers:
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The expression we have is:
Step 1. Use the binomial square formula:
Applying this formula to the first binomial squared:
Step 2. Apply the formula for the square of a binomial to the second binomial:
In this case, we have some operations to solve before we move on to isolating x. So we solve the operations:
Step 3. Move the terms that are not x squared to the right side of the expression. Remember that when we move one term from one side of the equation to the other, the term must change its sign. We get the following:
Step 4. Combine like terms and arrange terms in order from the greatest exponent to the lowest and leave the independent term at the end:
And that is the final result, which is option A.
Answer: Option A.
To find this question's answer, we need to know that sum of the exterior angles of any given polygon is 360°. This is default and non-changeable.
Now we know that the sum of all exterior angles is 360°, the question says that one angle is equal to 36°.
When we divide them we get:
So, we found that there are 10 exterior angles.
Now we know that the sum of all exterior angles is 360°, the question says that one angle is equal to 36°.
When we divide them we get:
So, we found that there are 10 exterior angles.