Mathematics, 02.12.2020 23:00 josephvcarter
Approximate the area under the graph of f(x)=4−x^2 with 4 equal intervals (n=4) from x=−2 to x=2 using
a) left endpoints,
b) right endpoints,
c) midpoints.
Answers: 2
Mathematics, 21.06.2019 18:00, peytondavis2424
Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares
Answers: 1
Mathematics, 21.06.2019 19:00, kaylaamberd
What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)
Answers: 2
Mathematics, 21.06.2019 19:00, ksiandua07
65% of students in your school participate in at least one after school activity. if there are 980 students in you school, how many do not participate in an after school activity?
Answers: 1
Mathematics, 21.06.2019 23:30, bbby2
Aprisoner is trapped in a cell containing three doors. the first door leads to a tunnel that returns him to his cell after two days of travel. the second leads to a tunnel that returns him to his cell after three days of travel. the third door leads immediately to freedom. (a) assuming that the prisoner will always select doors 1, 2 and 3 with probabili- ties 0.5,0.3,0.2 (respectively), what is the expected number of days until he reaches freedom? (b) assuming that the prisoner is always equally likely to choose among those doors that he has not used, what is the expected number of days until he reaches freedom? (in this version, if the prisoner initially tries door 1, for example, then when he returns to the cell, he will now select only from doors 2 and 3.) (c) for parts (a) and (b), find the variance of the number of days until the prisoner reaches freedom. hint for part (b): define ni to be the number of additional days the prisoner spends after initially choosing door i and returning to his cell.
Answers: 1
Approximate the area under the graph of f(x)=4−x^2 with 4 equal intervals (n=4) from x=−2 to x=2 usi...
History, 15.04.2020 21:50
Mathematics, 15.04.2020 21:50
English, 15.04.2020 21:50
Mathematics, 15.04.2020 21:50