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elena-s [515]
2 years ago
12

30 Puntos a una buena respuesta, por favor me urge.

Mathematics
2 answers:
MaRussiya [10]2 years ago
6 0

Answer:

podría ser 42 porque si alejandra y mario tienen 42+42=84

UkoKoshka [18]2 years ago
6 0

podría ser y 44+40=84 te sirve

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What are the sine cosine and tangent of theta=7pi/4 radians
FrozenT [24]

Answer:

see explanation

Step-by-step explanation:

\frac{7\pi }{4} is in the fourth quadrant

Where sin and tan are < 0 , cos > 0

The related acute angle is 2π - \frac{7\pi }{4} = \frac{\pi }{4}

Hence

sin([\frac{7\pi }{4} ) = - sin(\frac{\pi }{4}) = - \frac{1}{\sqrt{2} } = - \frac{\sqrt{2} }{2}

cos(\frac{7\pi }{4}) = cos(\frac{\pi }{4}) =  \frac{\sqrt{2} }{2}

tan(\frac{7\pi }{4}= - tan(\frac{\pi }{4} = - 1

6 0
3 years ago
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Here is another Guy's... This one is hard..12 Points? First one to answer with a great explanation gets brainlest (:!
schepotkina [342]

Answer:

25/16

Step-by-step explanation:

(4/5)^−2

=

(4/5)^−2

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(5/4)^2

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5^2/4^2

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(Decimal: 1.5625)

7 0
3 years ago
What does x=<br> please explain!
Genrish500 [490]

Answer:

x=37°

Step-by-step explanation:

2x°=74° (vertically opposite angles)

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3 years ago
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1.09 times 10 to the negative 3rd power
adoni [48]

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Step-by-step explanation:

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=0.00109

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Aliun [14]

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Step-by-step explanation:

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