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masha68 [24]
2 years ago
3

Select the correct answer from each drop-down menu. In ΔABC, the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, an

d 13.6 centimeters, respectively. m∠B = º, and m∠C = º. Round off your answers to two decimal places.

Mathematics
2 answers:
Oliga [24]2 years ago
7 0
The complete question in the attached figure

we have that
<span>In ΔABC, the lengths of a, b, and c are 22.5 centimeters, 18 centimeters, and 13.6 centimeters

</span>we can apply the Cosine Law to find the angles of the triangle.
<span>
find angle C
c</span>²=a²+b²-2ab*cosC
cos C=(a²+b²-c²)/(2ab)-------->  cos C=(22.5²+18²-13.6²)/(2*22.5*18)
<span>cos C=0.7967
C=arc cos (0.7967)-----------> C=37.19</span>°

find angle B
b²=a²+c²-2ac*cosB
cos B=(a²+c²-b²)/(2ac)-------->  cos B=(22.5²+13.6²-18²)/(2*22.5*13.6)
cos B=0.60
B=arc cos (0.60)-----------> B=53.12°
<span>
the answer is
</span><span>m∠B = 53.12º
</span><span>m∠C = 37.19º</span>

Liono4ka [1.6K]2 years ago
7 0

Answer:

the first one is off by ".1 the correct answer is 53.13

Step-by-step explanation:

had it on a test

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Answer:

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Step-by-step explanation:

<u>Step 1</u>:-

The average score of all golfers for a particular course has a mean of 64 and a standard deviation of 3.

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by using normal distribution

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P( X≥ 65) = P(z≥0.33)

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              = 0.5 - 0.1293 (see normal table)

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The average score of the 36 golfers exceeded 65

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6 0
2 years ago
What is the radical form of the expression?<br><br> (5x3y4)37<br> ↡
hram777 [196]

Option 4: \sqrt[7]{125x^9y^{12}} is the right answer

Step-by-step explanation:

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in case of 3/7, it will be broken down

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The 1/7 will be converted into base of radical while 3 will be he exponent

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Multiplying exponents

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Hence,

Option 4: \sqrt[7]{125x^9y^{12}} is the right answer

Keywords: Radicals, Exponents

Learn more about exponents at:

  • brainly.com/question/4939434
  • brainly.com/question/4980053

#LearnwithBrainly

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