1. which of the following is equivalent to the equation below?
4r +7s = 9
a. r = 4q - 28s
b. r =9-75
c. s = 79 +28r
9+4r
d. s = 9747

a variable is any characteristics, number, or quantity that can be measured or counted. a variable may also be called a data item. hope i !

the answer is:

mean: 6

mad: 2.14

1) the property is   ixi = a ⇔x = a   o x = -a

4(x-5)+3= 15⇒4x-20+3 = 15⇒4x-17= 15⇒4x = 15+17⇒4x = 32⇒x =32/4= 8

4(x-5) +3= -15⇒4x-20 +3 = -15⇒4x-17= -15⇒4x =-15+17⇒4x = 2⇒x =2/4= 1/2

the values are x =8 and x = 0,5