2 x 9 = 8 + w please show work. best answer will get brainliest.
2 answers:
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"Any strategy" includes letting a calculator solve it.
We find the tea costs $0.80 and the gum $0.45, so the price of Rocco's purchase will be $4.90.
We find the tea costs $0.80 and the gum $0.45, so the price of Rocco's purchase will be $4.90.
That's an easy parallelogram, parallel to the x axis. Let's label the points
A(-4,-1),B(-2,4),C(4,4),D(2,-1)
AD and BC are the sides parallel to the x axis. We'll call those the base, it has length 4 - -2 = 6.
The height is the change in y between the bases, so 4 - -1 = 5.
The area is base times height, 6 × 5 = 30
Answer: 30
The shoelace formula gives us the area of a polygon from 2D coordinates without worrying about the shape:
(-4,-1),(-2,4),(4,4),(2,-1)
(-2,4),(4,4),(2,-1),(-4,-1)