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Cloud [144]
3 years ago
5

The perimeter of triangle ABC is 82 inches. The triangle is rotated about a line that passes through points B and D.

Mathematics
2 answers:
Musya8 [376]3 years ago
7 0

Answer:

A cone with base radius of 17 in

Step-by-step explanation:

Given

Triangle ABC

Where

AB = BC = 24in

D = Midpoint of AC

Required

Which best describes the resulting three-dimensional figure?

First, the length of the third side of the triangle has to be calculated

The sides of triangle ABC are AB, AC and BC

Given that the perimeter = 82 in

AB + AC + BC = 82

Recall that AB = BC = 24in; The equation becomes

24 + AC + 24 = 82

Collect like terms

AC = 82 - 24 - 24\\AC = 34

Given that, the triangle is rotated at D, the midpoint of AC

The length of the midpoint has to be calculated

D = \frac{1}{2}AC

D = \frac{1}{2} * 34

D = \frac{34}{2}

D = 17

At this point, we can dismiss options C and D.

This is because; a triangular pyramid is formed by more than 1 triangles (at least 3 triangle) and in this case, we're dealing with only 1 triangle.

So, we have option A and B to select from.

When the triangle is rotated at point D, it generates a cone such that the radius of the cone is the distance at point D.

This implies that, a cone with base radius D is generated.

Recall that D = 17.

Hence, <em>A cone with base radius of 17 in</em>

garri49 [273]3 years ago
4 0

Answer:

A

Step-by-step explanation:

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In ΔDEF,{EF}\cong{DE} EF ≅ DE and m∠E = 104°. Find m∠D.
Alexeev081 [22]

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Subtract E from 180 to find the sum of the other two angles:

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Now because EF ≅ DE , angle D and F would be the same so divide 76 by 2

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Answer:

There wouldn't be a slope. It would be 0/5

Step-by-step explanation:

\frac{6-6}{2+3}

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7 0
3 years ago
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               cross multiplying,
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combining the like terms,
          6x² +15x -75=0
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What is the value of the underline digit 56.123 1 is underlined.A.ten B.one C.one-tenth D.one-hundredth ? Not sure if it is ten
Triss [41]
1 is in the one-tenths place. If 2 was in this spot, it would be two-tenths.

Here are the place values for the question's given number of 56.123.

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6- ones
decimal
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2- hundredths
3- thousandths

ANSWER:
1 has the place value of C) one-tenth

Hope this helps! :)
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