Exam (elaborations)
ACT Math Formulas(Math formulas for problems found on the SAT and ACT.
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Distance Formula Correct Answer: d=√(x₁-x₂)² + (y₁-y₂)² (EX: Find distance between (5,6) and (1,3) √(5-1)² + (6-3)²= √(4)² + (3)²= √16 + 9= √25= 5=Distance Slope Correct Answer: Slope= Rise/Run=Change in Y/Change in X (y₂-y₁/x₁-x₂) (EX: Find slope of (5,6) and (1,3) 6-3/5-(-1)= 3/6= 1/2 Slope Intercept Correct Answer: y=mx+b Ex: y=2/3x + 5 Midpoint Formula Correct Answer: (x₁+x₂)/2, (y₁+y₂)/2 PEDMAS Correct Answer: Parenthesis, Exponents, Multiplication, Division, Add, Subtract. EX: 9-2 x (5-3)² + 6÷3= 9-2 x (2)² + 6÷3= 9-2 x (4) +6÷3= 9-8 +2= 9-6= 3 Quadratic Equation Correct Answer: ax²+bx+c= 0 EX: x²+ 9x+ 18=0 Quadratic Formula Correct Answer: ²x = −b ± √b²-4ac/2a
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- Uploaded on
- November 9, 2022
- Number of pages
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- Written in
- 2022/2023
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- Questions & answers
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distance formula correct answer d√x₁ x₂² y₁ y₂² ex find distance between 5
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6 and 1
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3 √5 1² 6 3² √4² 3² √16 9 √25 5distance slope correct answer slope riserunchange
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