Discussion

In the system of equations above, what is the value of b ?

(A)8
(B)...
(C)...
(D)...
(E)...
(F)...
*This question is included in Nova Math - Diagnostic: Test / Review, question #3

The solution is

Posted: 01/03/2012 13:06
Where is the system of equations?
Posted: 01/03/2012 13:39
Tatiana,

The equations are missed from the app. It should be:

a + b + c/2 = 60

−a − b + c/2 = −10

Thanks for pointing it. It will be added in our next version.

Best,

- The ArcadiaPrep Team
Posted: 06/26/2012 18:47
Can somebody explain how to do this .
Posted: 06/26/2012 18:47
ha, nevermind I understand now :)
Posted: 08/03/2012 17:48
I'd still like to know how.
Posted: 08/03/2012 18:34
M. Haque, did you know that after you make a choice, you can either go to the Next Question or Show Correct Answer? If you tap on Show Correct Answer, you will see the step-by-step solution. If after you read the step-by-step you still have a question then please post on the discussion forum.
Posted: 12/04/2012 15:49
Though we know that c=50, we're unsure of what the value of a is. The answer is (E).
Posted: 07/14/2013 12:13
Can't you use substitution?
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Contributor
Posted: 07/15/2013 13:47
A.W., we can use substitution. However, a quick glance into the 2 equations tells us we can solve for c very easily by adding up the two equations. Finally, we have 3 unknowns but only 2 equations, so we know we can't solve for all 3 unknowns.
Posted: 10/15/2014 08:33
Huh

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