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statuscvo [17]
3 years ago
11

Anna paddled 16 km up river to see her uncle, and then returned downstream to her home. The river flows at a rate of 6 km/h, and

Anna paddles at a rate of 10 km/h. What was her average speed in km/h?
Mathematics
1 answer:
PIT_PIT [208]3 years ago
8 0

Anna average speed in km/h is 7.5 km per hour

<h3>Average speed</h3>

Average speed is the ratio of total distance covered to total time taken. It is given by:

Average speed = Total distance / total time

Given the distance upstream is 16 km at a rate of 6 km/h, hence:

  • 6 = 16/t
  • t = 2.67 hours

The distance downstream is 16 km at a rate of 10 km/h, hence:

  • 10 = 16/t
  • t = 1.6 hours

Total distance = 16 km + 16 km = 32 km

Total time = 2.67 + 1.6 = 4.27 hours

Average speed = 32 / 4.27 = 7.5 km per hour

Anna average speed in km/h is 7.5 km per hour

Find out mote on average speed at: brainly.com/question/4931057

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3 years ago
Whats the answer to 1+3x=-2(x+7)
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Answer:

x = -3

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At a high school basketball game the Lions and the Eagles are playing. The Lions attempted 16 free throws and made 10, attempted
mezya [45]

Answer:

a. The free throw percentage for the Lions is of 62.5%.

b. The free throw percentage for the Eagles was of 37.04%.

c. The field goal percentage for the Lions was of 56.01%.

d. The field goal percentage for the Eagles was of 34.43%.

e. The Lions scored 96 points.

f. The Eagles scored 64 points.

g. Lions

Step-by-step explanation:

a. What is the free throw percentage for the Lions?

10 out of 16, so:

10*100%/16 = 62.5%.

The free throw percentage for the Lions is of 62.5%.

b. What is the free throw percentage for the Eagles?

10 out of 27, so:

10*100%/27 = 37.04%

The free throw percentage for the Eagles was of 37.04%.

c. What is the field goal percentage (two-point and three-point shots combined) for the Lions?

25 + 12 = 37 out of 50 + 16 = 66. So

37*100%/66 = 56.01%.

The field goal percentage for the Lions was of 56.01%.

d. What is the field goal percentage (two-point and three-point shots combined) for the Eagles?

9 + 12 = 21 out of 44 + 17 = 61. So

21*100%/61 = 34.43%

The field goal percentage for the Eagles was of 34.43%.

e. How many points did the Lions score?

10 free throws, 25 two's and 12 three's. So

10 + 25*2 + 12*3 = 96

The Lions scored 96 points.

f. How many points did the Eagles score?

10 free throws, 9 two's and 12 three's. So

10 + 9*2 + 12*3 = 64

The Eagles scored 64 points.

g. Which team won the basketball game?

The Lions scored more points, so they won.

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Four significant is an answer 
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