Use the diagram to answer the question.

Mathematics

1 answer:

Alex_Xolod [135]3 years ago

3 0

The answer to your question is D.

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What is 66 2/3% of 39? what steps do i take to get my answer. and 66 2/3 is a mixed number fraction.

gregori [183]

66 2/3
=(66*3+2)/3
=200/3

((200/3)*39)/100
=(7800/117)/100
=78/1.17
=66.7%

not so sure it is right though, but that's what I came up with. hope it helps

3 0

2 years ago

Find the length of DE. Round to the nearest hundredth. (Picture included)

LenKa [72]

Notice the picture
we have, the opposite side
the angle
and we want the hypotenuse

so recall your SOH CAH TOA $\bf sin(\theta)=\cfrac{opposite}{hypotenuse}
\qquad \qquad 
% cosine
cos(\theta)=\cfrac{adjacent}{hypotenuse}

\\ \quad \\\\
% tangent
tan(\theta)=\cfrac{opposite}{adjacent} =$

which one has all that? low and behold, is Ms Sine,
so let's bother Ms Sine

$\bf sin(\theta)=\cfrac{opposite}{hypotenuse}\implies sin(27^o)=\cfrac{18}{hypotenuse}
\\\\\\
hypotenuse=\cfrac{18}{sin(27^o)}$

make sure your calculator is in Degree mode, since the angle here is in degrees, as opposed to Radian mode