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Mathematics 12 Online
OpenStudy (narissa):

Please Help

OpenStudy (narissa):

563blackghost (563blackghost):

So lets first work out part a.... Now we know that x is substituted as 10 and y is substituted as -3 so lets input this and see how the equation looks... \[2(3(10)-(-3))\] This is how our equation looks so we first would do the Parenthesis because we would follow PEMDAS.... so we would first multiply 3 and 10 and then subtract the product by -3

OpenStudy (narissa):

30- -3

563blackghost (563blackghost):

Correct ^^ now lets subtract 30 and -3...

OpenStudy (narissa):

33

563blackghost (563blackghost):

Correct ^^ now we are left with...\[2(33)\]all we need to do now is multiply ^^

OpenStudy (narissa):

66

563blackghost (563blackghost):

Yup ^^ our answer is 66 so we now can begin part b...

OpenStudy (narissa):

thank you!

OpenStudy (narissa):

okay i did the other 2 by myself i got -38 and 2

563blackghost (563blackghost):

Correct ^^...Great Job!

OpenStudy (narissa):

thanks

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