Helppp please 20 points for that ​

Step-by-step explanation:

a^2 + b^2 = c^2

7^2 + b^2 = 13^2

b = square root of 120

x=5sq rt 6   or 12.25

Step-by-step explanation:

(5sq rt 13)^2=x^2+(5sq rt 7)^2

325=x^2+175

x^2=150

x=5sq rt 6   or 12.25

answer: no, but if it does it's a obvious pattern.

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.