Simplify square root of negative 121

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Step-by-step explanation:

A negative number can not be square rooted because it is impossible to get a negative square. When you square a negative number you would get a positive number, and when you square a positive number you would still get a positive number

step-by-step explanation:

for volume, add base x height x width

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.

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