Rashida is building a model of her city's downtown area. She is constructing part of an office building, as shown below. Each cube has an edge length of foot. Based on the model, the length of the building is foot. The width of the model building is foot. The height of the model building is foot. The volume of the model building is cubic foot.

its 0.1 miles per minute

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

step-by-step explanation:

the true ones are a b and d