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xxMikexx [17]
3 years ago
12

Which of the following is a solution of y - x > -3 (6, 2) (2, 6) (2, -1)

Mathematics
1 answer:
frozen [14]3 years ago
4 0
The correct point will make the inequality y-x>-3 "true."  Look at each of the 3 given points separately.  Subst. its coordinates into y-x>-3 and determine whether the resulting inequality is true or not.  Is 2-6>-3?  Is -4>-3?  No.  So, (6,2) is NOT a solution.  Continue by checking out the other two points in the same manner.
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777dan777 [17]

Answer:

x = \frac{7}{2} ± \frac{\sqrt{13} }{2}

Step-by-step explanation:

Given

x² - 7x + 9 = 0 ( subtract 9 from both sides )

x² - 7x = - 9

Solve using the method of completing the square

add ( half the coefficient of the x- term)² to both sides

x² + 2( - \frac{7}{2} )x + \frac{49}{4} = - 9 +

(x - \frac{7}{2} )² = \frac{13}{4} ( take the square root of both sides )

x - \frac{7}{2} = ± \sqrt{\frac{13}{4} } = ± \frac{\sqrt{13} }{2} ( add

x = \frac{7}{2} ± \frac{\sqrt{13} }{2} = \frac{7+/-\sqrt{13} }{2}

4 0
2 years ago
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Josh​ simplified 4x - 8x ÷ 2 and said the answer was -2x. What was josh's error? What should his answer have been?
Svetradugi [14.3K]

Answer:

see explanation

Step-by-step explanation:

Given

4x - 8x ÷ 2

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4x - 4x = 0 ← correct answer

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