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3 years ago

WHOEVER ANSWERS IT FIRST GETS THE BRAINLIEST!!1

Mathematics

2 answers:

Lostsunrise [7]3 years ago

6 0

Answer:

57.624 in²

Step-by-step explanation:

f(4) = 15(1.4)^4

= 15 (14/10)^4

= 15 (7/5)^4

= 15 (2401/625)

= 7203/125 = 57.624 in²

nevsk [136]3 years ago

5 0

Answer:

f(4) = 15 * 1.4^4 = 57.624 inches²

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3 years ago

Read 2 more answers

State whether the given measurements determine zero, one, or two triangles. b=86, b=21, c=18

hammer [34]

Answer: 1

Step-by-step explanation:

I assume you meant to type $B=86^{\circ}, b=21, c=18$ .

By the Law of Sines,

$\frac{\sin C}{c}=\frac{\sin B}{b} \\ \\ \frac{\sin C}{18}=\frac{\sin 86^{\circ}}{21} \\ \\ \sin C=\frac{18 \sin 86^{\circ}}{21} \\ \\ C=\sin^{-1} \left(\frac{18 \sin 86^{\circ}}{21} \right), 180^{\circ}-\sin^{-1} \left(\frac{18 \sin 86^{\circ}}{21} \right) \\ \\ C \approx 58.77^{\circ}, 121.23^{\circ}$

Since only one of these values will make a triangle (the obtuse possibility for C will mean $B+C > 180^{\circ}$ , which violates the condition that the angles of a triangle add to 180 degrees), 1 triangle can be formed.

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