Area of square = where,
is the side length of the square.
s must be positive since it is a side length, so the negative root of 81 is rejected.
Perimeter=
Perimeter=
7. Find the missing lengths of the sides
1 answer:
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Answer:
Step-by-step explanation:
Given
Liam deposited
Rate of interest is
If the amount after t years is
Simple interest is given by
And amount is
Substituting values we get
9514 1404 393
Answer:
(8.49; 225°)
Step-by-step explanation:
The angle is a 3rd-quadrant angle. The reference angle will be ...
arctan(-6/-6) = 45°
In the 3rd quadrant, the angle is 45° +180° = 225°.
The magnitude of the vector to the point is its distance from the origin:
√((-6)² +(-6)²) = √(6²·2) = 6√2 ≈ 8.4859 ≈ 8.49
The polar coordinates can be written as (8.49; 225°).
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<em>Additional comment</em>
My preferred form for the polar coordinates is 8.49∠225°. Most authors use some sort of notation with parentheses. If parentheses are used, I prefer a semicolon between the coordinate values so they don't get confused with an (x, y) ordered pair that uses a comma. You need to use the coordinate format that is consistent with your curriculum materials.
