Two spinners are spun at the same time. The first spinner is divided into 5 sections. A, B, and C are equal sized and D and E are each half the size of A. The second spinner has 4 sections each worth the same amount and the 5th and largest section is worth 13 of the circle.

b.an increase in a causes b to decrease

true

explanation:

linear pair postulates

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116