Xavier (X) has $20 more than Sara (s). Their combined money totals $90. Which system of equations represents this situation? A) x+s=90s + x=20
B) x+s=90 x-s=20
C) x-s=90 s+s=20
D) s-x=90 x-s=20
PLEASE HELP

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation:

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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.

your answer would be b