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anonymous
 one year ago
Evaluate 2x^2y for x = 2 1/2 and y = 3 3/5
anonymous
 one year ago
Evaluate 2x^2y for x = 2 1/2 and y = 3 3/5

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i plugged in 2(2 1/2) ^2 (3 3/5)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[2(2\frac{ 1 }{ 2 })^2 (3\frac{ 3 }{ 5})\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think what will make it a little easier to evaluate would be if you changed the mixed integer into a fraction. \[2\frac{1}{2} \iff \frac{(2 \cdot 2)+1}{2}\]\[3\frac{3}{5} \iff \frac{(3 \cdot 5) +3}{5}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0and from there do i just multiply straight across?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Yup, you input the fraction in place of x and y and simplify! :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay so after that i got 5/2 and then 12/5 is that right?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Lets check it out. I havent solved it yet! SO we'll see.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0okay! im solving it right now

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i figured it out! thanks

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[x = \frac{ 5}{2} ~,~ y = \frac{12}{5}\]Now let's input these into our formula: \(2x^2y\) When I put these values in, I got:\[2\left(\frac{5}{2}\right)^2\left(\frac{12}{5}\right)\]\[2\left(\frac{25}{4}\cdot \frac{12}{5}\right)\]\[2(15) = \boxed{30}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hmm. i got the answer as 45

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can you write out your steps? Maybe we can compare and see which one of is wrong :o

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I did 2(5^2/2^2) and then 18/5 because i multiped 2*2 then added 1 which gave me 5 so i then put 2(25/4) (18/5) and then put the 2 into a fraction so 2/1 (25/4) (18/5) and then i crossed out numbers so i did (2*1/1) (25/2*2) and then it would be 25/2 (18/5) Cross out numbers again (5*5)/2) (1*18/5*1) (5/2) (18/1) = 90/2 = 45

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0sorry if you cant understand

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Where did the \(\frac{18}{5}\) come from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i multiplied 3*5 and added 3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thank you for helping me! I have to go to school now, the answer sheet said it was 45 so maybe i did something wrong : )

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well... \((3\cdot 5) +3 = 15 + 3 = 12...\)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah i moved the negative sign tho
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