3 years ago

95% work between 6-12 hours what is the mean number of hours worked

Mathematics

1 answer:

Elena-2011 [213]3 years ago

7 0

The mean hours worked is 9 hours.

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3t^2+10t+7<br> factor im confused what im doing

mrs_skeptik [129]

Answer:

(3t + 7) (t + 1)

Step-by-step explanation:

3t^2 + 10t + 7

(3t^2 + 3t) (7t+7)

3t (t+1) 7 (t+1)

(3t+7) (t+1)

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3 years ago

How much chocolate will each person get if 3 people share 1/2 pound of chocolate equally?

eimsori [14]

1/6 pound of chocolate for each person ( 1/2 / 3 ).

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3 years ago

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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

The median of the set {0, 0, 4, 6, 6, 8} is

Alex

I think the anwser is5..

8 0

3 years ago