Answer:
idk bro but can you answer my question and show work please or take a picture of the shown work and attach as a question or answer please
Step-by-step explanation:
Answer:
b is correct answer
Step-by-step explanation:
hope it helped
A. 38
Let X = seventh graders
6th graders are twice the number of 7th graders; therefore, 6th graders will be 2X.
The total number of students is 57.
2X + X = 57
3X = 57
X = 57 / 3
X = 19
IF X represents the 7th graders; there are 19 seventh graders present.
Since 6th graders are represented by 2X; Then, 2 * 19 = 38 is the number of 6th graders present.
Add both numbers to check: 19 + 38 = 57.
In polar coordinates, the region 
is the set of points
and we have 
and 
. So the integral, converted to polar, is
Substitute 
to get
This tells you the answer
