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DiKsa [7]
3 years ago
14

Please help and show working out

Mathematics
1 answer:
slavikrds [6]3 years ago
7 0

cb^2 + ab^2 = ca^2  pythagorean theorem

cb^2 +6^2 = 12^2

cb^2 +36 = 144

cb^2 = 108

cb = sqrt (108)

sin D = opp /hyp

sin D =bc/cd

sin 55 = sqrt(108)/cd

cd = sqrt(108)/sin 55

cd=12.687

cd = 12.7  to three significant figures

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Answer:

Both are correct

Step-by-step explanation:

The Line has the following equation: y= 1+4/5 x

So we need to know which points: (-5,-3) and (10,9), (-10,-7). (-15, -11) are part of the line

For instances, lest start by evaluating (-15,-11) in y=1+4/5 x

this leaves us to the following operation: -11=1+4/5 * (-15)

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8 0
4 years ago
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Answer:

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garri49 [273]
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3 years ago
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Katena32 [7]

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