Answer:
C = 42/ 13 hours or 3 3/13 hours
Step-by-step explanation:
The formula is
1/A +1/B = 1/C
where A is the time for person 1 to do the job alone
B is the time for person B to do the job alone
C is the time for them to do the job together
1/6 + 1/7 = 1/C
The common denominator is 42C so multiply each side by 42C
42 C*(1/6 + 1/7) = 1/C *42C
Distribute
7C +6C = 42
13 C = 42
Divide each side by 13
C = 42/13
Changing to a mixed number
C = 3 3/13 hours
Answer:
you can fill 6 and a half vials
Step-by-step explanation:
13//2=6.5
Answer: 18
Step-by-step explanation:
The least common denominator of and is going to be a multiple of 9 and 6. Let us list them out:
9: 9, <u>18</u>, 27, 36, 45, 54, 63, 72, 81, 90
6: 6, 12, <u>18</u>, 24, 30, 36, 42, 28, 54, 60
You can see I bolded and underlined 18. Why? This is the first common multiple of 9 and 6 so it is our least common denominator (LCD).
Hey there!
-1/2 (1/4 * - 3/8)
= -1/2(1/4)(-3/8)
= -1/2(-3/32)
= 3 / 64
Therefore, your answer should be:
3/64
Good luck on your assignment & enjoy your day!
~Amphitrite1040:)
Answer: .15x+2.00=2.75
5 days
Step-by-step explanation:
2.75-2.00= .75
.75/ .15= 5