2 years ago

Write as a unit rate12 inches of rain in 6 hours

Mathematics

1 answer:

RideAnS [48]2 years ago

5 0

Answer is 2 inches per hour.

12 inches/6 hours divided by 6 is 2 inches/ 1 hour.

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81a raised to the power of 2 minus 25

muminat

81a²-25 would be the answer I'm pretty sure. Hopefully I helped.

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-11b+7=40 b=? help, please

serious [3.7K]

Answer: -3

Step-by-step explanation:

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Find 2 common angles that sum to (17pi/12) 2. Evaluate tan(17pi/12) using the sum identity for tangent.

Dmitry [639]

Note that
$\frac{17 \pi }{12} = \frac{3 \pi }{12} + \frac{14 \pi }{12} = \frac{ \pi }{4} + \frac{7 \pi }{6}$

Note that
$x= \frac{ \pi }{4}:\,\, sin(x) =cos(x)= \frac{1}{ \sqrt{2} },\,tan(x)=1\\x= \frac{7 \pi }{6} :\,\,sin(x)=- \frac{1}{2} ,\,\,cos(x)=- \frac{ \sqrt{3} }{2} ,\,\,tan(x)= \frac{1}{ \sqrt{3} }$

Use the identity
$tan(x+y)= \frac{tan(x)+tan(y)}{1-tan(x)tan(y)}$

Therefore
$tan( \frac{17 \pi }{12} )= \frac{1+ \frac{1}{ \sqrt{3} } }{1- \frac{1}{ \sqrt{3} } } = \frac{ \sqrt{3}+1 }{ \sqrt{3}-1} = \frac{( \sqrt{3}+1 )^{2}}{( \sqrt{3}-1 )( \sqrt{3}+1 )} = \frac{3+1+2 \sqrt{3}}{3-1} =2+ \sqrt{3}$

Answer: 2 + √3

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3 years ago

Please help. thank you.

liq [111]

Reason:
The angle between tangents and angle subtended by radii are supplementary∠BAP = 90° 

x = 180 - 73 = 107°

Answer: x = 107°

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3 years ago

21. What numbers come next in this pattern? 3 5 7 9

Ray Of Light [21]

Answer:

11, 13, 15,

Step-by-step explanation:

have a great day :D

lol i answered ur last question also

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Write as a unit rate12 inches of rain in 6 hours​

Write as a unit rate12 inches of rain in 6 hours