cheesedoodle
12.10.2019 •
Mathematics
Our school swimming pool is 25 meters long if i could just have to swim 3 kilometers how many lengths of the pool will we need to swim
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Ответ:
3x1000= 3000 meters
300/25=120 pool lengths
Ответ:
Step-by-step explanation:
Solve the following equation:
-In order to solve a pair of equations by using substitution, you first need to solve one of the equations for one of variables and then you would substitute the result for that variable in the other equation:
-First equation:
-Second equation:
-Choose one of the two following equations, which I choose the first one, then you solve for by isolating
-Subtract to both sides:
-Subtract to both sides:
-Divide both sides by :
-Multiply by :
-Substitute for in the second equation, which is :
Multiply by :
-Combine like terms:
-Subtract to both sides:
-Multiply both sides by :
-After you have the value of , substitute for onto this equation, which is :
-Multiply and :
-Since both and have the same denominator, then add the numerators together. Also, after you have added both numerators together, reduce the fraction to the lowest term: