You are standing 9 meters from the edge of a circular pond. The distance from you to a point of tangency on the pond is 51 meters. What is the radius of the pond. So far I have (51)^2=r^2+(9+r)^2 then 2601=r^2+(r^2+18+81) then 2520=2r^2+18r then r(2r+18) If you do it please show your work

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

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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