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To solve the equation for x, first divide both sides of the equation by 4 to get . Then, take the natural logarithm of both sides (base e) to get
. The left hand side of this equation if equal to 2.7x, so we get
. The final step is to divide both sides of the equation by 2.7, to get that
. This is approximately equal to 0.782.
Answer:
Length:28 cm
Width: 13 cm
Step-by-step explanation:
Let
x ---> the length of a rectangle picture frame
y ---> the width of a rectangle picture frame
we know that
The area of a rectangle picture frame is equal to
we have
so
----> equation A
The length of a rectangle picture frame is 2 centimeters more than twice it’s width
so
---> equation B
Solve the system by graphing
Remember that the solution is the intersection point both graphs
The solution is the point (28,13)
see the attached figure
therefore
Length:28 cm
Width: 13 cm
