B or a because they are negative numbers
Answer:
1 hour 6 minutes = 66 minutes.
Step-by-step explanation:
Starting the test at 2:34 pm,
Finishes the test 35 mins later, time = 2:34 pm + 35 mins = 3:09 pm
Then Kevin starts his practice at 4:15 pm
Time between time the test ended and when the practice started
= 4:15 pm - 3:09 pm = 1 hour 6 minutes = 66 minutes.
Hope this Helps!!!
Answer:
Herbs are small plants that have a fleshy or juicy stem when they are young. The stems of some herbs develop hard, woody tissue when they grow old. Most herbs are perennials. This means that the tops of the plants die each growing season, but the roots remain alive and produce new plants year after year.
Step-by-step explanation:
The answer is is 17x. I hope this helps
Answer:
- 33 1/3 liters of 30%
- 16 2/3 liters of 45%
Step-by-step explanation:
Let x represent the liters of 45% solution needed. Then the amount of HCl in the mix is ...
0.45x +0.30(50 -x) = 0.35(50)
0.15x = 0.05(50) . . . . . simplify, subtract 0.30(50)
x = (0.05/0.15)(50) = 50/3 = 16 2/3 . . . liters of 45% HCl
33 1/3 liters of 30% and 16 2/3 liters of 45% HCl are needed.
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<em>Comment on the solution</em>
You may notice that the general solution to a mixture problem of this sort is that the fraction of the mix that is the highest contributor is ...
(mix % - low %) / (high % - low %) = (.35 -.30) / (.45 -.30) = .05/.15 = 1/3
