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storchak [24]
2 years ago
14

Use substitution to solve the linear system of equations.

Mathematics
1 answer:
Ne4ueva [31]2 years ago
6 0

Answer:

Step-by-step explanation: infinitely many solutions (please give brainliest)

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C

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The diameter of a circle is:
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The distance from an edge of a circle to another edge

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Sandra calculated the missing side length of one of these triangles using the Pythagorean Theorem. Which triangle is it?
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Triangle D
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2 years ago
The perimeter of this triangle is 25 units. An angle bisector divides one side of the triangle into lengths of 2 and 3. Find the
grin007 [14]

Answer:

   8 and 12

Step-by-step explanation:

Sides on one side of the angle bisector are proportional to those on the other side. In the attached figure, that means

  AC/AB = CD/BD = 2/3

The perimeter is the sum of the side lengths, so is ...

  25 = AB + BC + AC

  25 = AB + 5 + (2/3)AB . . . . . . substituting AC = 2/3·AB. BC = 2+3 = 5.

  20 = 5/3·AB

  12 = AB

  AC = 2/3·12 = 8

_____

<em>Alternate solution</em>

The sum of ratio units is 2+3 = 5, so each one must stand for 25/5 = 5 units of length.

That is, the total of lengths on one side of the angle bisector (AC+CD) is 2·5 = 10 units, and the total of lengths on the other side (AB+BD) is 3·5 = 15 units. Since 2 of the 10 units are in the segment being divided (CD), the other 8 must be in that side of the triangle (AC).

Likewise, 3 of the 15 units are in the segment being divided (BD), so the other 12 units are in that side of the triangle (AB).

The remaining sides of the triangle are AB=12 and AC=8.

7 0
3 years ago
0.75 ( + 16) = 3 − 0.5( − 8)
Nookie1986 [14]
The correct answer is 5.25
4 0
3 years ago
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