Mathematics, 16.07.2019 03:30, waterbug7571
Aparabola has a focus of f(β11,5) f(β11,5) and a directrix of x=β12 x=β12 . the point p(x, y) p(x, y) represents any point on the parabola, while d(β12,y) d(β12,y) represents any point on the directrix. miguel was asked to use the distance formula to write an equation to represent this parabola. here is his work: fp=dp fp=dp step 1: (xβ(β11) ) 2 +(yβ5 ) 2 β β β β β β β β β β β β β β β β β β β β = (xβ(β12) ) 2 +(yβy ) 2 β β β β β β β β β β β β β β β β β β β β (xβ(β11))2+(yβ5)2=(xβ(β12))2+(yβy)2 step 2: (xβ(β11) ) 2 +(yβ5 ) 2 =(xβ(β12) ) 2 +(yβy ) 2 (xβ(β11))2+(yβ5)2=(xβ(β12))2+(yβy)2 step 3: x 2 +22x+121+ y 2 β10y+25= x 2 +24x+144 x2+22x+121+y2β10y+25=x2+24x+144 step 4: y 2 β10y+2=2x y2β10y+2=2x step 5: 1 2 y 2 β10y+1=x 12y2β10y+1=x identify each incorrect step. select all answer choices that both state an incorrect step and explain why it is incorrect. if there is only one incorrect step, select "only" and the answer choice that states and explains the incorrect step. step 3 is incorrect because a previous step is incorrect. step 1 is incorrect because he used the wrong signs for the coordinates of the focus. step 5 is incorrect because he divided incorrectly. step 3 is incorrect because he expanded the first binomial incorrectly. step 4 is incorrect because a previous step is incorrect. only step 2 is incorrect because the square roots cancel the squares. step 5 is incorrect because a previous step is incorrect.
Answers: 2
Mathematics, 21.06.2019 15:30, carriecarl3530
State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.
Answers: 1
Mathematics, 22.06.2019 04:00, cbbentonam72
Xf(x) = 2x + 5 1 7 2 9 3 11 4 13 5 15 6 17 linear functions grow by equal differences over equal intervals. in the table above, what column could be added to prove this relationship?
Answers: 1
Mathematics, 22.06.2019 05:00, meghan2529
Right triangle lmn has vertices l(7, β3), m(7, β8), and n(10, β8). the triangle is translated on the coordinate plane so the coordinates of lβ are (β1, 8). (x, y) β (x + 6, y β 5) (x, y) β (x β 6, y + 5) (x, y) β (x + 8, y β 11) (x, y) β (x β 8, y + 11)
Answers: 2
Aparabola has a focus of f(β11,5) f(β11,5) and a directrix of x=β12 x=β12 . the point p(x, y) p(x, y...
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