∆DEF has vertices D(1, 4), E(3, 5), and F(2, 1). If you reflect ∆DEF across the x-axis, what will be the coordinates of the vertices of the image ∆D′E′F′?

A.) D′(–1, –4), E′(–3, –5), and F′(–2, –1)

B.) D′(–1, 4), E′(–3, 5), and F′(–2, 1)

C.) D′(4, –1), E′(5, –3), and F′(1, –2)

D.) D′(1, –4), E′(3, –5), and F′(2, –1)

D

Step-by-step explanation:

When reflecting points across the x axis, and x coordinate remains the same and y-coordinates become the opposite of the original.

depends on how many days you are talking about

step-by-step explanation:

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation: