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valentina_108 [34]
2 years ago
9

12 x 12 / 12 x 12 x 12 x 12 - 777 + 21 x 12 x 12 / 12 = ?

Mathematics
2 answers:
DaniilM [7]2 years ago
6 0

Answer:

116,031 about

Step-by-step explanation:

frozen [14]2 years ago
3 0

Answer:

20,211

Step-by-step explanation:

Use the correct order of operations, and do one step at a time.

12 x 12/12 x 12 x 12 x 12 - 777 + 21 x 12 x 12/12 =

= 144/12 x 12 x 12 x 12 - 777 + 252 x 12/12

= 12 x 12 x 12 x 12 - 777 + 3024/12

= 144 x 12 x 12 - 777 + 252

= 1728 x 12 - 777 + 252

= 20,736 - 777 + 252

= 19,959 + 252

= 20,211

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Find the exact value by using a half-angle identity. sin(5pi/12)
anzhelika [568]

Find <span>tan<span>(<span><span>5π</span>12</span>)</span></span> and sin ((5pi)/12)
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Explanation:

Call tan ((5pi/12) = t. 
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<span>D=<span>d2</span>=<span>b2</span>−4ac=12+4=16</span>--> <span>d=±4</span>

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Call <span><span>sin<span>(<span><span>5π</span>12</span>)</span></span>=<span>siny</span></span>
Use trig identity: <span><span>cos2</span>a=1−2<span><span>sin2</span>a</span></span>
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vodomira [7]

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Step-by-step explanation:

26 is 65% of 40

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