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Alex Ar [27]
4 years ago
12

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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Step-by-step explanation:

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Helga [31]

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4 0
3 years ago
How many different rectangles can you draw, that has an area of 28 cm sq. ? pls help me
jolli1 [7]

Answer:

You can draw three rectangles:

1- 28 * 1.

2- 14*2

3- 7*4

Step-by-step explanation:

We have a total area of 28. If we use only integer numbers, we can find all the divisors of 28. The possible rectangles will be organized with them, taking into account that the product of them, which means the area should be 28.

28 = 1*2*2*7

We can organize them as follows:

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R3: 28 = 4*7

Finally, we can conclude that there are only three possibilities

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2- 14 by 2

3- 7 by4

The perimeters will be:

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3 years ago
I need.help please
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4 years ago
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