the ladder of a fire truck is 20 m long at a certain moment in makes an angle of pi/3 radians with the horizontal at what rate is the tip of the ladder ascending if the ladder is rotating upwards at .1 rad/sec?

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

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation: