1.the base of a trapezoid are 11 meter and 14 meters. its height is 10 meters . what is the area of the trapezoid?

11

Step-by-step explanation:  Bases of trapezoid : 11 meters and 14 meters

height of trapezoid : 10 meters

Area of trapezoid = (sum of bases / 2) height

A = (11m + 14m)/2  * 10m

A = 25m / 2 * 10m

A = 12.5m * 10m

A = 125m²

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

i dont understand

step-by-step explanation: