Answer:
97 trays
Please follow along below for an explanation.
Step-by-step explanation:
If a stack of 50 kitchen trays is 7.25 inches tall, how many would it take to make a stack 14 inches tall?
The first step is to divide the 7.25/50 to determine the height of each plate.
The answer to this is 0.145 inches per tray.
Now you need to find how many are in 14 inches.
Divide 14 inches by 0.145 inches to find out how many plates are needed.
You will get an answer of 96.55
You can't exactly have 96.55 serving trays so you need to round to the nearest whole number. Because the decimal is greater than 0.5, you round up.
This gets you to 97 serving trays.
Answer:
if i understood right..
Step-by-step explanation:
... 2-6+3= 1
4×5= 20
1×20=20
the answer is 20.
I'm sorry if i understood the wrong thing.
Answer: The amswer is D because -1 + 1 = 0
Answer:
- first attachment has pentagon and decagon
- second attachment has hexagon and dodecagon
- computation info explained below
Step-by-step explanation:
<u><em>1, 2. Central Angle, Interior Angle</em></u>
See the 3rd attachment for the values. (Angles in degrees.)
The central angle is 360°/n, where n is the number of vertices. For example, the central angle in a pentagon is 360°/5 = 72°.
The interior angle is the supplement of the central angle. For a pentagon, that is 180° -72° = 108°.
These formulas were implemented in the spreadsheet shown in the third attachment.
<u><em>3. Angles vs. Number of Sides</em></u>
The size of the central angle is inversely proportional to the number of sides. In degrees, the constant of proportionality is 360°.
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<em>Comment on the drawings</em>
The drawings are made by a computer algebra program that is capable of computing the vertex locations around a unit circle based on the number of vertices. The only "work" required was to specify the number of vertices the polygon was to have. The rest was automatic.
The above calculations describe how the angles are computed. Converting those to Cartesian coordinates for the graphics plotter involves additional computation and trigonometry that are beyond the required scope of this answer.
These figures can be "constructed" using a compass and straightedge. No knowledge of angle measures is required for following the recipes to do that.