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Sunny_sXe [5.5K]
3 years ago
5

Find the area of triangle PQR if PQ = QR = 12 and angle PQR = 120

Mathematics
1 answer:
Leona [35]3 years ago
3 0

Answer:

36√3 unit square

Step-by-step explanation:

A=1/2(ab)sin120

A=1/2(12*12) sin120

A=72*√3/2=36√3 unit square

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Jay estimates that a basketball weights about .5 pounds. Shawna estimates that a basketball weights about.05. Whose estimate is
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Answer:

Jay's estimate is closer to the actual weight of the basketball

Step-by-step explanation:

The standard weight of an NBA basketball is 1.4 pounds.

Judging the accuracy of Jay's and Shawna's answer based on their percentage error when compared with the standard, we have that Jay's answer has a lower error as shown below

Error  = (Standard value - Estimated value)/ Standard Value ×100

Error in Jays answer = \frac{1.4 - 0.5}{1.4} × 100 = 64.28 %

Error in Shawna's answer = \frac{1.4 - 0.05}{1.4} × 100 = 96.42%

From this, It is obvious that Jay's answer has a lower percentage error when compared to the actual value.

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3 years ago
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irinina [24]

Answer:

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Step-by-step explanation:

-3r+5<-7

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Step-by-step explanation:

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