In ΔBCD, the measure of ∠D=90°, the measure of ∠B=71°, and DB = 67 feet. Find the length of BC to the nearest tenth of a foot.
Answers
Answer:
BC = 205.8 feet
Step-by-step explanation:
Please see attached photo
From the attached photo:
Angle B = 71°
Adjacent = BD = 67 feet
Hypothenus = BC = x
The value of x can be obtained as follow:
Cos B = Adjacent / Hypothenus
Cos 71 = 67 / x
0.3256 = 67 / x
Cross multiply
0.3256 × x = 67
Divide both side by 0.3256
x = 67 / 0.3256
x = 205.8 feet
Therefore BC = 205.8 feet
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Step-by-step explanation:
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Step-by-step explanation:
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Step-by-step explanation:
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Brian is building a rectangular pool that has a circular island in the middle. If he wants the length to be 25ft long, the width to be 15ft wide, and the island to have a diameter of 4ft, then what will the area of Brian's pool be, not including the island?
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Step-by-step explanation:
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Step-by-step explanation:
5 points and brainliest to first correct answer!
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Step-by-step explanation:
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Answers
Complete question :
Swim team Hanover High School has the best women’s swimming team in the region. The 400- meter freestyle relay team is undefeated this year. In the 400-meter freestyle relay, each swimmer swims 100 meters. The times, in seconds, for the four swimmers this season are approximately Normally distributed with means and standard deviations as shown. Assuming that the swimmer’s individual times are independent, find the probability that the total team time in the 400-meter freestyle relay is less than 220 seconds. Follow the four-step process
Answer:
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Step-by-step explanation:
Given the data:
Swimmer__ Mean __Std. dev.
Wendy ___ 55.2 ____ 2.8
Jill _______ 58.0 ____ 3.0
Carmen____56.3 ____ 2.6
Latrice_____54.7_____2.7
Team average = (55.2 + 58 + 56.3 + 54.7) = 224.2
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P(x < 220) :
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P(Z < - 0.757) = 0.225
Answer:
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Step-by-step explanation:
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Answers
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Answers
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Step-by-step explanation:
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How to find the area of a rectangle?The area of a rectangle can be found by multiplying the 2 adjacent sides of the rectangle. In a rectangle with sides l and b, the area can be found by A = l*b.
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Step-by-step explanation:
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