WebFeb 20, 2024 · add and subtract (-1) 2 within the parentheses f (x) = -2 (x 2 - 2x + (-1) 2 ) + 2 + 1 group like terms and write in standard form f (x) = -2 (x - 1) 2 + 3 The above gives h = 1 and k = 3 . h and k can also be found using the formulas for h and k obtained above. h = - b / 2a … WebFor standard form: y=Ax^2+Bx+C. Look at the coefficient of the x^2 term. If "A" is positive, the parabola opens up. If "A" is negative, then the parabola opens down. For Vertex Form: y=a (x-h)^2+k. The sign of "a" determines …

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WebJun 14, 2024 · K a = 4.5 ∗ 10 − 4 Concentration (From ICE Table) of products/reactants: HNO2 = 0.2 - x H+ = x NO2 = x Therefore: 4.5 ∗ 10 − 4 = x 2 / ( 0.2 − x) Rearrange: x 2 + x ∗ ( 4.5 ∗ 10 − 4) − ( 0.2 ( 4.5 ∗ 10 − 4)) = 0 Using quadratic formula: x ≈ 0.009 p H = − l o g ( 10) p H ≈ 2.05 . That should be correct! Share Improve this answer Follow WebDraw, Scan, Solve, and Learn! 0:18. Solve long equations, draw in landscape! Get step-by-step explanations. See how to solve problems and show your work—plus get definitions for mathematical concepts. Graph your math problems. Instantly graph any equation to visualize your function and understand the relationship between variables. high waisted jeans aren\u0027t tight enough

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WebSep 15, 2024 · Multiply the first equation by 4 and the second by -3:-12x - 12y = 4h. 12x - … WebConic Sections: Parabola and Focus. example. Conic Sections: Ellipse with Foci WebThe solutions to many such equations can be determined by inspection. Example 2 Find the solution of each equation by inspection. a. x + 5 = 12 b. 4 · x = -20 Solutions a. 7 is the solution since 7 + 5 = 12. b. -5 is the solution since 4 (-5) = -20. SOLVING EQUATIONS USING ADDITION AND SUBTRACTION PROPERTIES how many feet is 15 inches