At 1: 30 pm tom leaves his boat from a dock and head south. he travels at a rate of 25 mph. 10 minuets later, mary leaves the same dock in her speedboat and heads after tom. if she travels at a rate of 30 mph, when will she catch up with tom?

8496 cars

step-by-step explanation:

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