A pharmacist needs 100 ml of 60 % ethyl alcohol .if the available concentration of alcohol is 70% compute for the volume of water and volume of 70% ethyl alcohol needed to prepared the desired concentratio

sorry i got nothing

step-by-step explanation:

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.

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step-by-step explanation:

this is a parabola.