<span>A) Joey used 10 congruent triangles to create a regular decagon.
What kind of triangles is he using?
He is using isosceles triangles. because the two sides (of each triangle) whose vertix is at the center of the decagon are congruent, while the third side, is different.
b)Joey used 10 congruent triangles to create a regular decagon.
Find the three angle measures of one of the triangles. Explain how you know.
The angle between the two congruent sides is equal to 360° divided by the number of triangles.
360° / 10 = 36.
The other two angles are congruent and must obey the rule of 180°.
2x + 36 = 180 => 2x = 180 - 36 = 144
x = 144 / 2 = 72°
Then two angles are 72° and the other is 36°.
c)Joey used 10 congruent triangles to create a regular decagon.
If the area of each triangle is 14.5 square inches, then what is the area of the regular decagon? Show all work.
The area of the decagon is ten times the area of a triangle.
Area of the decagon = 10 * 14.5 in^2 = 145 in^2.
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Answer:
28 biscuits
18 packages of pemmicans
4 packages of butter and cocoa
Step-by-step explanation:
We are given percentage of total daily calories for each item.
Since total number of calories per person each day is 5600,then;
Number of calories from biscuit daily = 40% × 5600 = 2240 calories
Since there are 80 calories per biscuits, then number of biscuits = 2240/80 = 28 biscuits
Number of calories from pemmican daily = 45% × 5600 = 2520 calories
Since there are 140 calories per package, then number of packages of pemmican = 2520/140 = 18 packages of pemmicans
Number of calories from butter and cocoa daily = 15% × 5600 = 840
Since there are 210 calories per package, then number of packages = 840/210 = 4 packages of butter and cocoa
Answer:
<em>The prediction interval provides an interval estimation for a particular value of y while the confidence interval does it for the expected value of y. </em>
Step-by-step explanation:
<em>A</em><em>. the prediction interval is narrower than the confidence interval.</em>
the prediction interval is always wider than the confidence interval.
<em>B</em><em>. the prediction interval provides an interval estimation for the expected value of y while the confidence interval does it for a particular value of y.</em>
False
<em>C</em><em>. the prediction interval provides an interval estimation for a particular value of y while the confidence interval does it for the expected value of y. </em>
<em>True</em>
<em>D.</em><em> the confidence interval is wider than the prediction interval.</em>
the prediction interval is wider
Answer:
13.1371212 miles
Step-by-step explanation: