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4 years ago

8

A stack of two hundred ten cards is placed next to a ruler, and the height of the stack is measured to be 7/8 inches. How thick

is one card?

1 answer:

Naily [24]4 years ago

3 0

(7/8) divided by 200
each card is 0.004375 inches thick

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Triangle ABC has vertices at A(–2, 3), B(–3, –6), and C(2, –1). Is triangle ABC a right triangle? If so, which angle is the righ

levacccp [35]

Answer:

Yes, the right angle is angle C.

Step-by-step explanation:

The given triangle has vertices at A(–2, 3), B(–3, –6), and C(2, –1).

Recall the slope formula;

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The slope of the line going through AC is

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The slope of the line going through BC s

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The product of the slopes of AC and BC is $-1\times1=-1$

This means line AC is perpendicular to BC at C.

Hence the triangle ABC is right angled at C.

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