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Sav [38]
3 years ago
9

I just need number 12 please show work if you can​

Mathematics
1 answer:
UNO [17]3 years ago
3 0

Answer:

135

Step-by-step explanation:

180*(8-2)

180*6

1080/8

135

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Step-by-step explanation:

Use Sine rule.

\frac{ac}{ \sin(b) }  =  \frac{ab}{ \sin(c) }  \\  \frac{ac}{ \sin(90) } =  \frac{10}{ \sin(42) }   \\  ac \sin(42)  = 10 \sin(90)  \\ ac =  \frac{10 \sin(90) }{ \sin(42) }  \\  ac = 14.9 \: units \: (3s.f)

Angle A + angle B + angle C = 180 (sum of angles in triangle)

Angle A + 90 + 42 = 180

Angle A + 132 = 180

Angle A = 180 - 132

= 48

\frac{bc}{ \sin(a) }  =  \frac{ab}{ \sin(c) }  \\  \frac{bc}{ \sin(48) } =  \frac{10}{ \sin(42) }   \\  bc \sin(42)  = 10 \sin(48)  \\ bc =  \frac{10 \sin(48) }{ \sin(42) }  \\  = 11.1units (3sf)

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3 years ago
Your computer displays the progress of a downloading video(46%). What fraction of the video is downloaded? Write your answer in
suter [353]
I'm going to say for this one it's going to be 46% Notice that the word percent has the word "cent", meaning a hundred. So "per hundred". We have 46 out of 100 here, so 46/100, and we can simplify to 23/50. Hope this helps.
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jok3333 [9.3K]
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Step-by-step explanation:

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