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Rasek [7]
3 years ago
9

A ball is thrown upward from the top of a building. The function below shows the height of the ball in a relation to sea level,

f(t), in feet, at different times, T, in seconds:
f(t) = - 16t^2 + 48t + 160
The average rate of change of f(t) from t = 3 seconds to t = 5 seconds is ___ feet per second
Mathematics
2 answers:
katrin [286]3 years ago
6 0

Answer:

Step-by-step explanation:

asd

yulyashka [42]3 years ago
6 0

Answer:

-80

Step-by-step explanation:

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(9-243)/(4-1)=-78
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Help ASAP will give brainly for CORRECT ANSWER
Pie

Answer:

2cnd one 3rd one 4th one last one

Step-by-step explanation:

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3 years ago
What is 15/20 simplest form
Fiesta28 [93]

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the simplest form of 15/20 is 3/4

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!
mrs_skeptik [129]

2(2x − 1) > 6  or  x + 3 ≤ −6


2(2x − 1) > 6

4x - 2 > 6

4x > 8

x > 2

or

x + 3 ≤ −6

x ≤ - 9

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(- ∞ , - 9] or (2 , + ∞)

Answer is the first one

(- ∞ , - 9] or (2 , + ∞)

8 0
3 years ago
The data list shows the scores of ten students in Mr. Smith's math class. 61, 67, 81, 83, 87, 88, 89, 90, 98, 100 What is the st
cluponka [151]

Answer:

12.3

Step-by-step explanation:

Step 1

We find the mean

The data list shows the scores of ten students in Mr. Smith's math class. 61, 67, 81, 83, 87, 88, 89, 90, 98, 100

Mean = Sum of terms/Number of terms

Number of terms = 10

Mean = 61 + 67 + 81 + 83 + 87 + 88 + 89 + 90 + 98 + 100/10

Mean = 844/10

Mean = 84.4

Step 2

Standard deviation

The formula for sample standard deviation =

√(x - Mean)²/n - 1

= √[(61 - 84.4)² + (67 - 84.4)² + (81 - 84.4)² + (83 - 84.4)² + (87 - 84.4)² + (88 - 84.4)² + (89 - 84.4)² + (90 - 84.4)² + (98 - 84.4)² + (100 - 84.4)²]/10 - 1

=√ 547.56 + 302.76 + 11.56 + 1.96 + 6.76 + 12.96 + 21.16 + 31.36 + 184.96 + 243.36/10 - 1

= √1364.4/9

= √151.6

= 12.31259518

Approximately to the nearest tenth = 12.3

The standard deviation = 12.3

6 0
3 years ago
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