Considering the unit circle, it is found that the sine is negative on the third and on the fourth quadrant.
<h3>What is the unit circle?</h3>For an angle the unit circle is a circle with radius 1 containing the following set of points:
.
Hence, from the above explanation, the sine is negative when y is negativem, which is on the third and on the fourth quadrant.
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The required inequality is: x≤7
Step-by-step explanation:
The words have to be considered and observed properly to write an inequality.
At most means, that the value cannot exceed 7.
So,
Let x be a number
Then
A number is at most 7 will be written as:
as the value of x cannot exceed 7.
The required inequality is: x≤7
Keywords: Inequality, Variables
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Given:
The population of continent of South America in 2010 is 395, 280, 204.
To find:
The closest estimate of this number.
Solution:
We have,
The approximate value of this number is
The scientific form of this value is
Therefore, the correct option is C.