Answer:
π/8
Step-by-step explanation:
∫₂°° dx / (4 + x²)
If x = 2 tan u, then dx = 2 sec²u du.
When u = π/4, x = 2. As u approaches π/2, x approaches ∞.
∫ (2 sec²u du) / (4 + 4 tan²u)
½ ∫ (sec²u du) / (1 + tan²u)
½ ∫ (sec²u du) / sec²u
½ ∫ du
½ (π/2 − π/4)
π/8
Answer:
x = 30
Step-by-step explanation:
We know that the angle is a right angle, which is equal to 90. So in order to see what the equation is equal to, we have to subtract 81 from 90.
90 - 81 = 9
With the answer we get, we can now begin to solve for x.
2x - 51 = 9, add 51 to both sides
2x = 60, divide 60 by 2 to get x
x = 30
Now, to check your work, plug 30 into the equation.
2(30) - 51
60 - 51 = 9
hope this helps!! :]
B 1.0 ml a and c give a more precise measurement going to the hundredths and thousandths place
Answer:
D Not similar
Step-by-step explanation:
For similar triangles the sides are always in proportions.
Here two sides are in proportion but third side isn't. So triangles are not similar.
Divide the two numbers. The equation is 420/15=28. So Lee would get 28 miles per gallon of gasoline. I hope this helps!
