Sara made an error in solve the one-step equation below.5x + 9 = 29-9 -9- 4x = 29/4. /4x = -7.25What is the error that Sara made
1 answer:
To solve this one-step equation you:
1. Substract 9 in both sides of the equation:
In this step is the mistake as Sara gets as result -4x=29 and the corret result of substract 9 in both sides of the equation is 5x=20.2. Divide both sides of the equation into 5:
Then, the answer that Sara should found for the equation is x=4
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The inequality is given as,
Consider that any ordered pair (x,y) is said to be the solution of the inequality if the ordered pair gives a true result when substituted in the inequality.
Consider the ordered pair (4,-9),
Clearly, the result is true. So it can be concluded that (4,-9) is a solution of the given inequality.
Therefore, mark YES for the ordered pair (4,-9).
Consider the ordered pair (3,4),
Clearly, the result is true. So it can be concluded that (3,4) is a solution of the given inequality.
Therefore, mark YES for the ordered pair (3,4).
Consider the ordered pair (-4,0),
Clearly, the result is false as -28 is not actually greater than -26.
So it can be concluded that the ordered pair (-4,0) is not a solution of the given inequality.
Therefore, mark NO for the ordered pair (-4,0).
Consider the last ordered pair (-6,8),
Note that the numbers on both sides of the inequality are identical. So there should be the symbol of equality, not inequality. So, it can be concluded that this ordered pair (-6,8) is not a solution of the given inequality.
Therefore, mark NO for the ordered pair (-6,8).