Question 7 of 10 After being rearranged and simplified, which of the following equations could
be solved using the quadratic formula? Check all that apply.
O A. -3x2 + 9x + 3x2 = 14 + x-1
B. 5x + 4 = 3x2 - 2
C. -X2 + 4x + 7 = 2x2 -9
O D. x2 + x2 + x = 0

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step-by-step explanation:

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x

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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