One dozen eggs cost $1.98. How much does 1 egg cost? (Round to the nearest cent)
2 answers:
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Answer:
y = x - 1
Step-by-step explanation:
5x + 2y = 12
2y = -5x + 12
y = x + 6
y = mx + b
4 = ( -2 ) + b
4 = 5 + b
b = -1
y = x - 1
We can draw the following picture:
then, we can see that the parallelogram consists in 2 equal triangles:
The area of a triangle is
By substituting the given values into the area formula, we get
Therefore, the area of the parallelogram is twice the area of one triangle:
which gives:
that is, the answer is 24000 ft^2
