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S_A_V [24]
3 years ago
15

Consumer Reports is conducting tests to determine the distance a certain car model will travel on one gallon of gas. In a sample

of 9 cars, the average is found to be 28.2 miles. If the standard deviation for the model is 2.7 miles, find a 99% confidence interval for the mean distance of these cars using one gallon of gas. Estimate your answers according to the values in the problem
_______ miles to ____miles
Mathematics
1 answer:
Paul [167]3 years ago
6 0
It jenkskmwmwmwkwkwkwmmwmwmw jw kwkwkoqowkwkkwmwmwmw ninnwnwnwmmwmww. Híñeme jnwnw
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Need help ASAP thanks
Otrada [13]

Answer:

area of sector= teete ×πr²

360

<u>4</u><u>0</u><u>°</u>×<u>2</u><u>2</u>×2×2

360 7

<u>4</u><u>0</u><u>×</u><u>8</u><u>8</u>

2520

<u>3</u><u>5</u><u>2</u><u>0</u>

2520

=1.397°

7 0
3 years ago
Please help I will give brainliest to the right answer!!!
timama [110]

Answer:

Step-by-step explanation:

Given function l:

h= -16t² + 26t

where h represents height and t represents time.

The time for dolphin atbthe height 5 feet is given by putting the value of h as 5 in the function,

5 = -16t² + 26t

16t² - 26t + 5 = 0

For this equation: a=16, b=-26, c=5

Use quadratic formula with a=16, b=-26, c=5.

x=(−b±√b2−4ac)/2a

x=−(−26)±√(−26)2−4(16)(5)/2(16)

x=13/16 + 1/16√89 or x=13/16+ −1/16√89

x=1.40 or 0.22

5 0
3 years ago
The guidance counselor of a large high school reports that 48.5% of Junior Pre-Calculus students signed up to take AP Statistics
Drupady [299]

Answer:

A) 0.09

Step-by-step explanation:

7 0
3 years ago
Maria solved the equation -5 n = -12. Her answer was n = 2. She is fairly confident about her answer, but wants to do a quick ch
lyudmila [28]
It would be the fourth answer -6(2)=-13 I think 
4 0
3 years ago
Use a protractor to find the measure of each angle in the circle
dalvyx [7]
You shouldnt be cheating! what would your guardian say!!! 

*edit*
<span>dont even need a protracter b/c there all evenly spaced and a line = 180 so 180 / 3 is 60</span>
8 0
3 years ago
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