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4 years ago

Given that AD is the perpendicular bisector of BC, AB=15, AC=x, and BD=0.25x, identify BC.

Mathematics

2 answers:

Colt1911 [192]4 years ago

6 0

Answer:

7.5 units

Step-by-step explanation:

BD = DC

Triangles ABD and ACD are congruent.

So, x = 15

Reasoning (if needed)

AC² = AD² + DC²

x² = AD² + (0.25x)²

AD² = 0.9375x²

AB² = AD² + DB²

15² = 0.9375x² + (0.25x)²

225 = x²

x = 15

BC = 2BD

= 2(0.25×15)

= 7.5

zvonat [6]4 years ago

3 0

Answer:

The answer is 7.5

Step-by-step explanation:

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eduard

Answer:

The system of this equation is ( -1, 10) which is Option A.

Step-by-step explanation:

Solve for y in the first equation.

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Replace all occurrences of yy with -5x+5 in each equation.

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Solve for x in the first equation.

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Replace all occurrences of x with -1 in each equation.

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3 years ago

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sveticcg [70]

<h3>Answer: 2/3</h3>

============================================

Work Shown:

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3 years ago

Read 2 more answers