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vesna_86 [32]
3 years ago
7

Evaluate the expression for a = -20. 19 +21=

Mathematics
1 answer:
NeTakaya3 years ago
6 0

Answer: a = 0.81

So yeah, that is the answer.

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PLEASE HELP ME ASAP
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Answer:

20.04 units

Step-by-step explanation:

The diagram shows right triangle ABC. Use the definition of the cosine:

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Which equation has the solutions x=1+/- 5?
nikitadnepr [17]

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x^{2} -2x-4=0

Solving Steps

Use the quadratic formula

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Multiply / Remove the parentheses / Evaluate

x=\frac{2(+/-)\sqrt{4+16} }{2}

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x=\frac{2(+/-)2\sqrt{5} }{2} \\x=\frac{2-2\sqrt{5} }2}

Simplify

x=1+\sqrt{5} \\x=1-\sqrt{5}

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2 years ago
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