Step-by-step explanation:
{ Sum of angles of a triangle )
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Answer:
Step-by-step explanation:
Cross multiply the proportion:
Solve for x:
Answer:
x = 7
Step-by-step explanation:
We are told one quarter of x is equal to 7 , then the equation is
x = 7 ( multiply both sides by 4 to clear the fraction )
x = 28
The slope is 3, and the y-intercept is 9
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Question
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x² - 49
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Form into 2 perfect squares
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x² - 7²
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Formula
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a² - b² = (a + b) (a - b)
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Apply the formula
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x² - 7² = (x + 7)(x - 7)
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Answer: (x + 7)(x - 7)
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