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alexira [117]
3 years ago
5

2. An arctictern flies a distance of 245km in 9 hours. How fastdoes it fly?​

Mathematics
1 answer:
Arada [10]3 years ago
8 0

Answer:

27 km/h

Step-by-step explanation:

Utilise formula Speed = Distance ÷ Time

245 km ÷ 9 hours = 27.2 km/h

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The three angles of a triangle measure 2x – 6, 3x + 5, and 2x + 20. What is the measure of the smallest angle in degrees
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Smallest angle = 40

Step-by-step explanation:

Angle sum property:Sum of all three angles of triangle is 180

2x - 6 + 3x + 5 + 2x + 20 = 180   {Combine like terms}

2x + 3x + 2x - 6 + 5 + 20 = 180

                     7x  + 19       = 180            {Subtract 19 from both sides}

                                  7x = 180 - 19

                                  7x = 161               {Divide both sides by 7}

                                    x = 161/7

x = 23

2x - 6 = 2*23 - 6 = 46 - 6 = 40

3x + 5 = 3*23 + 5 = 69 + 5 = 74

2x + 20 = 2*23 + 20 = 46 + 20 = 66

Smallest angle = 40

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