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Alexxx [7]
3 years ago
9

WILL MAKE BRAINLIEST!!!!!!! 19 pts

Mathematics
1 answer:
Ahat [919]3 years ago
5 0

the answer should be A because the sea level has rised

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Solve the triangle. Round your answers to the nearest tenth. A. m∠A=43, m∠B=55, a=16 B. m∠A=48, m∠B=50, a=23 C. m∠A=48, m∠B=50,
alexgriva [62]

Answer:

D. m∠A=43, m∠B=55, a=20

Step-by-step explanation:

Given:

∆ABC,

m<C = 82°

AB = c = 29

AC = b = 24

Required:

m<A, m<C, and a (BC)

SOLUTION:

Find m<B using the law of sines:

\frac{sin(B)}{b} = \frac{sin(C)}{c}

\frac{sin(B)}{24} = \frac{sin(82)}{29}

sin(B)*29 = sin(82)*24

\frac{sin(B)*29}{29} = \frac{sin(82)*24}{29}

sin(B) = \frac{sin(82)*24}{29}

sin(B) = 0.8195

B = sin^{-1}(0.8195)

B = 55.0

m<B = 55°

Find m<A:

m<A = 180 - (82 + 55) => sum of angles in a triangle.

= 180 - 137

m<A = 43°

Find a using the law of sines:

\frac{a}{sin(A)} = \frac{b}{sin(B)}

\frac{a}{sin(43)43} = \frac{24}{sin(55)}

Cross multiply

a*sin(55) = 25*sin(43)

a = \frac{25*sin(43)}{sin(53)}

a = 20 (approximated)

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3 years ago
Please help me quickly
Mariana [72]

Answer: the awnser to this problem is 38.5 sq. units

Step-by-step explanation:

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2 years ago
Factor the expression completely 8x^2-18 Please help
nirvana33 [79]

Answer:

2 (2x - 3) x (2x + 3)

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Answer this question for me pls. :)
Finger [1]
-8, 3 Do you need me to explain
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3 years ago
Solve for x.<br>-3+85-5=-8<br>A. -2.<br>B.-1<br>C.-3/4<br>D.0​
posledela

Answer:

-2

Step-by-step explanation:

-3+8x-5=-8

8x = -16

x = -2

5 0
3 years ago
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