3 years ago

Which of the following is equivalent to 5^-9

Mathematics

2 answers:

statuscvo [17]3 years ago

8 0

Answer:

0.000000512, 1⁄1953125

Step-by-step explanation:

5^-9 = 1/5^9

5^9 = 1953125

5^-9 = 1/1953125

VLD [36.1K]3 years ago

4 0

0.0000000005 9 zeros

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ANSWER

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We want to find the exact value of cos(150°).

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The cosine ratio is negative in the second quadrant.

Using the unit circle,

$\cos(150 \degree) = - \cos(30 \degree) = - \frac{ \sqrt{3} }{2}$

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2 years ago

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S_A_V [24]

So first start out by writing an expression for the cost of the child and the adult separately.

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