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rosa is 3 years older than her brother marco. let "x" stands for rosa's age and let "y" stands for marco's age . the linear equation of y= x 3 statse marcos age , y , in terms of rosas age , x .
a.when marco is 38, write the equation for rosa's age.
b.when marco is 72, write the equation for rosas age
i need help!
 one year ago
 one year ago
rosa is 3 years older than her brother marco. let "x" stands for rosa's age and let "y" stands for marco's age . the linear equation of y= x 3 statse marcos age , y , in terms of rosas age , x . a.when marco is 38, write the equation for rosa's age. b.when marco is 72, write the equation for rosas age i need help!
 one year ago
 one year ago

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RudyBest ResponseYou've already chosen the best response.1
the original equation: y=x3 If y is marco's age and that is 38 38=x3, then just solve for x Again, if y is marco's age and that is 72 72=x3, just solve for x
 one year ago

EmahBest ResponseYou've already chosen the best response.0
plug in marco's age for the y, and solve.
 one year ago

chubbytotsBest ResponseYou've already chosen the best response.0
can someone solve it for me TTTT
 one year ago

RudyBest ResponseYou've already chosen the best response.1
What you want is Rosa's age. The problem says x is Rosa's age. What you need to do is leave the x along on one side of the equation. From: 38=x3 Since you have negative 3 along with the x, just add +3 to eliminate it (because 3+3=0) BUT, in order for the equation to remain valid, add +3 to the other side of the equation too. So: 38+3=x3+3 And you have: 41=x And solve the other one in the same way.
 one year ago
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