Split up the interval [2, 5] into

equally spaced subintervals, then consider the value of

at the right endpoint of each subinterval.
The length of the interval is

, so the length of each subinterval would be

. This means the first rectangle's height would be taken to be

when

, so that the height is

, and its base would have length

. So the area under

over the first subinterval is

.
Continuing in this fashion, the area under

over the

th subinterval is approximated by

, and so the Riemann approximation to the definite integral is

and its value is given exactly by taking

. So the answer is D (and the value of the integral is exactly 39).
Answer: altitude: 5 cm
Explanation:

[ <u>a and b are bases, h is the altitude</u> ]
Here given:
Solve for altitude:

1. 3/4
2. 4/3
3. 12/5
4. 5/12
Tan is opp/adj
Answer:
x=162
Step-by-step explanation:
101 + 123 + 104 + 112 + 106 + 162 / 6 = 118