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kotykmax [81]
3 years ago
12

Which proportion could be used to find the length of side b?​

Mathematics
2 answers:
Goshia [24]3 years ago
8 0

Answer:

B

Step-by-step explanation:

Using the Sine Rule in ΔABC

\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}

∠C = 180° - (82 + 58)° = 180° - 140° = 40°

Completing values in the above formula gives

\frac{a}{sin58} = \frac{b}{sin82} = \frac{8.4}{sin40}

We require a pair of ratios which contain b and 3 known quantities, that is

\frac{b}{sin82} = \frac{8.4}{sin40}

OR

\frac{sin40}{8.4} = \frac{sin82}{b} → B

Zepler [3.9K]3 years ago
4 0

Answer:

B!

Step-by-step explanation:

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Health club A charges $60 yearly enrollment fee and $2 per visit. Health club B charges $20 yearly enrollment fee and &4 per
atroni [7]

Answer:

  20 visits

Step-by-step explanation:

The club that charges $40 more for enrollment charges $2 less per visit. The savings on visits is equal to the extra enrollment charge when the number of visits is 40/2 = 20.

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If you let v represent the number of visits, ...

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  40 = 2v . . . . . . . subtract 20+2v from both sides

  40/2 = v = 20 . . . . . . same as "word solution" above

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Your grandparents bring you a 1:800 scale model of the Eiffel Tower after a trip to Paris. The height of the model is 40.5 centi
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5/7x - 14 = -22. Find x.
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