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NeTakaya
3 years ago
12

Find the exact values of sin 2θ and cos 2θ for cos θ = 6/13

Mathematics
1 answer:
Oksanka [162]3 years ago
4 0

Answer:

Step-by-step explanation:

cos^-1(6/13)=62.5136°

sin(2*62.5136°)=0.8189

cos(2*62.5136°)=-0.5740

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A cartographer graphed the locations of a lighthouse and all of the islands in the vicinity. She positioned the lighthouse at (−
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Answer:

69 miles

Step-by-step explanation:

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En una olimpiada matemática, cada estudiante recibe un punto por cada pregunta acertada. En la siguiente tabla de frecuencias se
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La tabla relacionada con la pregunta se puede encontrar en la imagen adjunta a continuación:

Responder:

70%

Explicación paso a paso:

probabilidad de seleccionar aleatoriamente a un participante que haya obtenido entre 71 y 85 puntos:

Probabilidad = resultado requerido / Total de resultados posibles

Resultados posibles totales = Sumando la frecuencia para obtener el número total de estudiantes = (9 + 12 + 12 + 18 + 9) = 60 estudiantes

Resultado requerido:

Clase :

(71 - 75) = frecuencia = 12

(76 - 80) = frecuencia = 12

(81 - 85) = frecuencia = 18

Total = (12 + 12 + 18) = 42 = resultado requerido

Por tanto, P = 42/60 = 0,7 = (0,7 * 100%) = 70%

4 0
3 years ago
Find the interest on a loan of $2500 that's a borrowed at 9% for 7 months what the simple interest
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Find the z value such that 39% of the standard normal curve lies between −z and z.
zavuch27 [327]
Use symmetry and find z so that probability is:
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3 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

If there are 3 milliliters of compound A used for every 4 milliliters of compound B, then we can denote that we use 3x milliliters of compound A and 4x milliliters of compound B to get 533 milliliters of the drug. Thus,

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Hence, a chemist must take

4\cdot \dfrac{533}{7}=\dfrac{2132}{7}=304\dfrac{4}{7}\ milliliters

of compound B.

5 0
3 years ago
Read 2 more answers
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