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ivanzaharov [21]
3 years ago
7

Please solve fast it's urgent​

Mathematics
2 answers:
LekaFEV [45]3 years ago
8 0

Answer:

∅=30°

Step-by-step explanation:

sin∅=\frac{1}{\sqrt{3} }sin60^{0}

sin∅=\frac{\frac{\sqrt{3} }{2} }{\sqrt{3} } =\frac{\sqrt{3} }{2\sqrt{3} }=\frac{1}{2}

∅=sin^{-1}(\frac{1}{2})=  30^{0}

I hope this help you

Paul [167]3 years ago
4 0

Step-by-step explanation:

hope it's helpful to you ☺️

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3 years ago
Some time ago , Keith's height and his nephew's height were at a ratio of 15:7. Then, Keiths height increased by 16% and his nep
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Answer:

The answer is below

Step-by-step explanation:

The ratio of Keith's height and his nephew's height is 15:7. Let keith height be x cm and his nephews height be y cm.

\frac{x}{y}=\frac{15}{7}  \\x=\frac{15}{7}y

Keiths height increased by 16% , therefore Keith new height is (100% + 16%) × x = 1.16x

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but x = (15/7)y

1.16(\frac{15}{7} )y=2y+34\\\\\frac{87}{35} y=2y+34\\\\\frac{87}{35} y-2y=34\\\\\frac{17}{35}y=34\\ \\y=\frac{34*35}{17}\\ \\y=70\ cm

The nephews new height = 2y = 2(70) = 140 cm

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Their total current height = 140 cm + 174 cm = 314 cm

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3 years ago
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