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kaiteDID
Group Title
Solve the following equation. Then place the correct number in the box provided.
3 x  = 8
x = or x =
 one year ago
 one year ago
kaiteDID Group Title
Solve the following equation. Then place the correct number in the box provided. 3 x  = 8 x = or x =
 one year ago
 one year ago

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geoffb Group TitleBest ResponseYou've already chosen the best response.1
Implicit in the way they ask you to put your answer, you know there will be two solutions. Do you know what the vertical bars (  ) stand for?
 one year ago

kaiteDID Group TitleBest ResponseYou've already chosen the best response.0
no i dont
 one year ago

mtmb11 Group TitleBest ResponseYou've already chosen the best response.1
11 and 5 i think
 one year ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
The vertical bars mean absolute value. When you're evaluating the expression, positive is positive and negative is positive. So, if I want to know x, then answer is 10 if x is 10 *or* 10.
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.0
In x = A, you have x= A if x is positive. You have x = A if x is negative. The second consideration is resolved by a double negative.
 one year ago

mtmb11 Group TitleBest ResponseYou've already chosen the best response.1
o well i was wrong
 one year ago

geoffb Group TitleBest ResponseYou've already chosen the best response.1
@mtmb11 No you weren't.
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.0
So, if 3x is positive, you have the equation 3  x = 8 and then you solve that. If 3x is negative, you have (3  x) = 8 or x  3 = 8, and then you solve that one. You will have both as answers.
 one year ago

mtmb11 Group TitleBest ResponseYou've already chosen the best response.1
yay i was correct
 one year ago

mtmb11 Group TitleBest ResponseYou've already chosen the best response.1
how do i make my numbers go up on this account like right now i have 20
 one year ago

tcarroll010 Group TitleBest ResponseYou've already chosen the best response.0
So, do you understand now how you have to set up 2 equations? one for the positive and one for the negative.
 one year ago
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