Answer:
0.6 gallons of pure saline
Step-by-step explanation:
15-12=3
3=×0.03
20 gallons ×0.03=0.6 gallons
Answer:
12
Step-by-step explanation:
Answer: The correct options are
(d) 720.
(a) 336.
(c) 132.
(a) 5040.
Step-by-step explanation: The calculations are as follows:
(1) The number of ways in which six books be arranged on one shelf is given by
So, the total number of ways is 720.
Option (d) is CORRECT.
(2) Given that there are 8 girls competing in an ice-skating competition.
So, the number of ways in which they can finish in first, second, and third place is given by
Thus, the total number of ways is 336.
Option (a) is CORRECT.
(3) The number of ways in which a president and vice president can be selected from a class of 12 is given by
Thus, the total number of ways is 132.
Option (c) is CORRECT.
(4) The number of ways in which 7 students can line up for a class picture is given by
Thus, the required number of ways is 5040.
Option (a) is CORRECT.
Answer:
n = -1 n = -7
Step-by-step explanation:
5| 2n+8| +3 = 33
Subtract 3 from each side
5| 2n+8| +3-3 = 33-3
5| 2n+8| = 30
Divide by 5
5/5| 2n+8| = 30/5
| 2n+8| = 6
An absolute value equation has two solutions, one positive and one negative
2n+8 = 6 2n+8 = -6
Subtract 8 from each side
2n+8-8=6-8 2n+8-8 = -6-8
2n = -2 2n = -14
Divide by 2
2n/2 = -2/2 2n/2 = -14/2
n = -1 n = -7