Which of the following ordered pairs is not a solution of the system of inequalities? y > x2 – 4x – 5
y < –x2 – 5x + 6

A)

(1, –7)

B)

(1, –5)

C)

(1, 7)

D)

(–1, 6)

answer: x=60

b, i believe, but not sure.

6x = 48

i hope this . 6 cards each and a total of $48. dvide each side by 6 and you will have your answer.

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -