Answer:
<em>The complement is 47° and the supplement is 137°.</em>
Step-by-step explanation:
<u>Complementary and Supplementary Angles</u>
When the sum of two angles is equal to 90 degrees, they are called complementary angles. Similarly, if the sum of two angles is 180 degrees, they are called supplementary angles.
We are given an angle of 43 degrees. Its complementary angle is 90° - 43° = 47°, and its supplementary angle is 180° - 43° = 137°.
The complement is 47° and the supplement is 137°.
Let f(x) = y
thus y =
switch the position of y and x in the equation
then solve for y in this case
∴ y=
Thus,
Answer:
Length: 40 inches
Width: 10 inches
Step-by-step explanation:
Let 
width of the rectangle.
From the information "length of a rectangle is four times its width", we can express the length as:
Length = 
- - - -
Perimeter = 
(formula for perimeter of rectangle)
(combine like terms)
inches
∴ The width of the rectangle is 10 inches.
To find the length of the rectangle, we can use substitution:
Length =
inches
∴ The length of the rectangle is 40 inches.
Hope this helps :)
Answer:
the answer is 3 inches that is what I kniw
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