Can someone answer 7-11 for me by 12:00AM

Step-by-step explanation:

7). x + y = 4 ⇒ y = 4 - x -----> xy = - 96

x(4 - x) = - 96 ⇔ x² - 4x - 96 = 0

D = ( - 4)² - 4(1)(- 96) = 400 = (20)²

= (- ( - 4) - 20) ÷ 2(1) = - 8

= ( - ( - 4) + 20) ÷ 2 = 12

Numbers are - 8 and 12

8). It's your turn now. You can do it

9). x² - 5x + 3 = 0

0 < < 1

4 < < 5

10). - x² + 3x + 1 = 0

-1 < < 0

3 < < 4

11). x² + 2x - 2 = 0

- 3 < < - 2

0 < < 1

it could 14.28 but if its not that one then it has to be the 17 one. hope this ! : )

step-by-step explanation:

yes, gavin is right.

step-by-step explanation:

gavin is correct. 

this problem is about converting 9% per year to how many percent per quarter. the rate is still the same. it only differed in the time period. so, through dimensional analysis,

9% per year  × (1 year / 4 quarters) = 2.25% per quarter

if he was asked to convert 9% per year to how many percent per quarter  compounded quarterly, then you will not simply divide by four. this is because compounding is not linear.

hope this , have a good day. c;