Answer:
5
Step-by-step explanation:
Plug in the given x- and y-coordinates (in this case we'll use
for the missing variable)
Simplify
Subtract 18 from both sides (Subtraction Property of Equality)
Archer and Marilynn are in the same class. Archer takes a sheet of paper and cuts out a triangle whose longest. side is 1 inch.
Marilynn cuts out a similar triangle whose longest side is 1.5 inches. Archer cuts out another similar triangle whose longest side is 2 inches and Marilynn responds with a similar triangle whose longest side is 3 inches. They continue with this pattern until the end of the class period when Marilynn has a triangle with perimeter of 36 inches. What is the perimeter of Archer's triangle at the end of the class period?
1 answer:
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This is very simple. So you use two formulas:
Rectangle: Length • Width
Semicircle: Area =
With that, you do 0.8 ÷ 2 = 0.4 because we will be using radius. When solved, you get 0.2512... But for this problem, I will be rounding everything to the nearest hundredths.
Area of semicircle: ≈ 0.25
Now we solve for the rectangle. That is very easy. Just multiply 0.75 • 0.8 and you get 0.6
For this problem, I'm not sure why they make you round to the nearest centimeter, but if you do, you get 1 cm. Otherwise,
Round to nearest tenth: 0.9
Round to nearest hundredths: 0.85
