cristinaledford3696

17.02.2020 • 

Mathematics

A tee box is 128 feet above its fairway. When a golf ball is hit from the tee box with an initial vertical
velocity of 32 ft/s, the quadratic equation 0 = -16t2 + 32 + 128 gives the time t in seconds when a golf
ball is at height o feet on the fairway.
Part 1
Solve the quadratic equation by factoring to see how long the ball is in the air.
The ball is in the air a total of 4
seconds.
Part 2 out of 3
What is the height of the ball at 1 second?
One second after being hit from the tee, the ball is
feet above the fairway.
✓ Check
Next

Ответ:

gudon986732

11.12.2021

Mathematics

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Mean value of score = 40.167 (Approx.)

Step-by-step explanation:

Given:

Number of students in class = 12

Numbers;

45 , 22, 12,  96, 63,  63, 78 , 12 , 69, 81, 3, 19

Find:

Mean value of score

Computation:

Mean = Sum of all observation / Number of students

Mean value of score = [45 + 22 + 12 +  96 + 63 +  63 + 78  + 12 + 69 + 81 + 3 + 19] / 12

Mean value of score = [482] / 12

Mean value of score = 40.167 (Approx.)

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