Answer:
9x - 125
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Let x = Tan
dx = sec²d
sqrt(1 + ) = sec
So I = Tan(theta) * sec(theta)
but Tan(theta) = sin(theta) / cos(theta) = sin(theta)*sec(theta)
So I = integral sin(theta)*sec^2(theta) d theta
Answer A
Answer:
(25.732,30.868)
Step-by-step explanation:
Given that in a random sample of 42 people, the mean body mass index (BMI) was 28.3 and the standard deviation was 6.09.
Since only sample std deviation is known we can use only t distribution
Std error =
t critical for 99% two tailed
Margin of error
Confidence interval lower bound =
Upper bound =
Perimeter is all sides added up.
So, we know the width is 19ft and the length is x feet. We also know that the perimeter is 87 feet.
What we can do is make an equation to solve for x.
2x + 2(19) = 87
First, multiply 2 and 19.
2 x 19 = 38
2x + 38 = 87
Next, subtract 38 from both sides to move 38.
2x = 87 - 38
2x = 49
Lastly, divide both sides by 2 to get the value of x.
x = 49/2
x = 24.5
Thus, the length of the rectangle is 24.5ft
We can plug it into our equation to check if its correct.
2(24.5) + 2(19) = 87
24.5 x 2 = 49
2 x 19 = 38
49 + 38 = 87