The plane must be 3.38 miles away from the runway to begin the descent. The equation I used was "y = -0.1111111x + 0.3755682", 0.37~ being the height in feet (in miles) and -0.11~ being the descent. The x-intercept is located at 3.38.
Answer:
The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.
Step-by-step explanation:
What is Confidence Interval?
The confidence interval represents an interval that we can guarantee that the target variable will be within this interval for a given confidence level.
The confidence interval is given by
Where is the mean weight is the standard deviation is the critical value from t-table and n is the sample size.
The term is known as margin of error.
As the sample size is decreased the corresponding margin of error increases which results in wider confidence interval which means smaller precision.
The student who weighted the rock 5 times has a 95% confidence interval of (25.2, 29.1) which is guaranteed to be more wider (less precise) than the other student who weighted the rock 20 times.
We can say with 95% confidence that the true mean weight of the rock is within the interval of (25.2, 29.1).
In a triangle, the three interior angles always add to 180°, so <span>the measure of the third angle = 180 - 57 - 74 = 49</span>°
Answer: x=20
Step-by-step explanation:
When solving for a 5-sided pentagon we know the degrees add up to 540 degrees
Step 1: Write all variables given into an equation equal to 540 degrees
4x+5+7x+4x+10+6x+10+5x-5=540
I did not include the parenthesis because when I write out my equation they all share the same variable meaning they are like terms that can be combined.
Step 3: Combine like terms
26x+20=540
Step 4: Isolate the variable
By combining like terms like subtrating 20 to both sides. Always remember what you do to one side you must do to the other.
26x=540-20
Step 5:Continue to isolate the variable
26x=520
x=520/26
x=20
Final Answer
x=20 :) Hope that helped
12
3
39
3
147
3
579
Just subtract each number