Mathematics
Mathematics, 12.10.2019 16:00, renaudciera

Find f(–3) for the following function

select one:
a. 8( incorrect)
b. 9
c. 2
d. –8 (incorrect)

answer
Answers: 3
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ΠŸΡ€Π΅Π΄ΠΌΠ΅Ρ‚
Mathematics, 24.06.2019 06:00, jlayne0605
Aparabola has a focus of f(βˆ’11,5) and a directrix of x=βˆ’12. the point p(x,y) represents any point on the parabola, while d(βˆ’12,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: step 1: fp=dp step 2: (xβˆ’(βˆ’11))2+(yβˆ’5)2βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆš=(xβˆ’(βˆ’12))2+(yβˆ’y)2βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆš step 3: x2+22x+121+y2βˆ’10y+25=x2+24x+144 step 4: y2βˆ’10y+2=2x step 5: 12y2βˆ’10y+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.\ 1, step 3 is incorrect because he expanded the first binomial incorrectly. 2, step 5 is incorrect because a previous step is incorrect 3, step 2 is incorrect because he used the wrong signs for the coordinates of the focus. 4, step 3 is incorrect because a previous step is incorrect. 5, step 5 is incorrect because he divided incorrectly. 6, only 7, step 4 is incorrect because a previous step is incorrect.
Answers: 3
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Mathematics, 24.06.2019 06:00, jetblackcap
Aparabola has a focus of f(2,8.5) and a directrix of y=9.5. the point p(x,y) represents any point on the parabola, while d(x,9.5) represents any point on the directrix. maria was asked to use the distance formula to write an equation to represent this parabola. here is her work: step 1: fp=dp step 2: (xβˆ’2)2+(yβˆ’8.5)2βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆš=(xβˆ’x)2+(yβˆ’9.5)2βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆ’βˆš step 3: x2βˆ’4x+4+y2βˆ’17y+72.25=y2βˆ’19y+90.25 step 4: x2βˆ’4xβˆ’14=βˆ’4y step 5: βˆ’14x2+x+72=y 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. 1,step 3 is incorrect because she expanded the first binomial incorrectly. 2,only 3,step 2 is incorrect because she used the wrong signs for the coordinates of the focus. 4,step 4 is incorrect because she added the y-terms incorrectly. 5,step 5 is incorrect because she divided incorrectly. 6,step 3 is incorrect because a previous step is incorrect. 7,step 5 is incorrect because a previous step is incorrect. 8, step 4 is incorrect because a previous step is incorrect.
Answers: 1
continue
ΠŸΡ€Π΅Π΄ΠΌΠ΅Ρ‚
Mathematics, 16.07.2019 03:30, waterbug7571
Aparabola has a focus of f(βˆ’11,5) f(βˆ’11,5) and a directrix of x=βˆ’12 x=βˆ’12 . the point p(x,y) p(x,y) represents any point on the parabola, while d(βˆ’12,y) d(βˆ’12,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: (xβˆ’(βˆ’11) ) 2 +(yβˆ’5 ) 2 βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ √ = (xβˆ’(βˆ’12) ) 2 +(yβˆ’y ) 2 βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ βˆ’ √ (xβˆ’(βˆ’11))2+(yβˆ’5)2=(xβˆ’(βˆ’12))2+(yβˆ’y)2 step 2: (xβˆ’(βˆ’11) ) 2 +(yβˆ’5 ) 2 =(xβˆ’(βˆ’12) ) 2 +(yβˆ’y ) 2 (xβˆ’(βˆ’11))2+(yβˆ’5)2=(xβˆ’(βˆ’12))2+(yβˆ’y)2 step 3: x 2 +22x+121+ y 2 βˆ’10y+25= x 2 +24x+144 x2+22x+121+y2βˆ’10y+25=x2+24x+144 step 4: y 2 βˆ’10y+2=2x y2βˆ’10y+2=2x step 5: 1 2 y 2 βˆ’10y+1=x 12y2βˆ’10y+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
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ΠŸΡ€Π΅Π΄ΠΌΠ΅Ρ‚
Mathematics, 01.10.2019 05:30, SmokeyRN
Consider the following function. f(x) = 7x + 1 x (a) find the critical numbers of f. (enter your answers as a comma-separated list.) x = incorrect: your answer is incorrect. (b) find the open intervals on which the function is increasing or decreasing. (enter your answers using interval notation. if an answer does not exist, enter dne.) increasing incorrect: your answer is incorrect. decreasing incorrect: your answer is incorrect. (c) apply the first derivative test to identify the relative extremum. (if an answer does not exist, enter dne.) relative maximum (x, y) = incorrect: your answer is incorrect. relative minimum (x, y) = incorrect: your answer is incorrect.
Answers: 1
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Do you know the correct answer?
Find f(–3) for the following function

select one:
a. 8( incorrect)
b. 9

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