DISINI bc_solns
Answers to BC Exam
1. 54 barrels
2. 4,500 books of fiction
√
3. 5
√
1+ 5
4.
2
5. 100π
6. 4 − π
7. 9
8.
q
s
and
p
r
9.
1
4
10. 540◦
11.
5
9
2
1
12. y = − , z = −
2
9
13.
15
8
14. mW Y = 1, mXZ = −1, which are negative reciprocals. Therefore, the lines are perpendicular.
15.
12
= 2.4
5
16. 45 lines
17. 51 students
1. 54 barrels
2. 4,500 books of fiction
√
3. 5
√
1+ 5
4.
2
5. 100π
6. 4 − π
7. 9
8.
q
s
and
p
r
9.
1
4
10. 540◦
11.
5
9
2
1
12. y = − , z = −
2
9
13.
15
8
14. mW Y = 1, mXZ = −1, which are negative reciprocals. Therefore, the lines are perpendicular.
15.
12
= 2.4
5
16. 45 lines
17. 51 students