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vitfil [10]
3 years ago
15

1/7÷5/2=? plzzzz help

Mathematics
1 answer:
daser333 [38]3 years ago
4 0
When dividing fractions, you have to switch the second fraction and multiply them.
So, like this:
1/7 x 2/5
Would equal
2/35
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The length of AC is 16 km.

Solution:

Given data:

AB = c = 14 km, ∠A = 30° and ∠B = 89°

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<u>Let us first find angle C:</u>

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30° + 89° + m∠C = 180°

119° + m∠C = 180°

Subtract 119° from both sides, we get

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<u>To find the length of AC:</u>

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$\frac{b}{\sin 89^\circ } =\frac{14}{\sin 61^\circ }

Multiply by sin 89° on both sides.

$\sin 89^\circ \times \frac{b}{\sin 89^\circ } =\frac{14}{\sin 61^\circ } \times \sin 89^\circ

$b=\frac{14}{0.8746 } \times0.9998

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