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3 years ago

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Prove the following theorem indirectly. We will give you a start.Prove that a triangle cannot have two right angles. A triangle

cannot have two right angles. Suppose a triangle had two right angles.

1 answer:

nordsb [41]3 years ago

4 0

A triangle can't have two right angles because there is 180° in a triangle. Each right angle is 90° so it would be impossible

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Solve u^2 = -4, where u is a real number. Simplify your answer as much as possible.

alexdok [17]

Answer:

2i and -2i

Step-by-step explanation:

I'll change u to x to be easier to understand.

x^2 = -4

sqrt(x^2) = sqrt(-4)

sqrt(-4) = 2i, or -2i

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2 years ago

Evaluate the expression 3+ [5(2-3) - 6]

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Answer:

<em><u>Answer is below</u></em>

Step-by-step explanation:

<u><em>3+5(2−3)−6</em></u>

<u><em>=3+(5)(−1)−6</em></u>

<u><em>=3+−5−6</em></u>

<u><em>=3+−11</em></u>

<u><em>=−8</em></u>

<u><em>So therefore, your answer would be -8</em></u>

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sertanlavr [38]

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