After robbing a bank in Dodge City, a robber gallops off at 13 miles/hour. 30 minutes later, the marshall leaves to pursue the robber at 15 miles/hour. How many hours does it take the marshall to catch up to the robber?

sum= when you add is how much the whole amount is

distance= when you use angles and it means how far it goes

step-by-step explanation:

no one knows lol

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

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answer: d.) the total number of protons and neutrons is 15

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