On monday, there was no snow on the ground in buffalo, new york. on tuesday, three inches of snow fell. on wednesday, a half an inch of snow melted. on thursday, two and a half more inches fell. on friday, another inch and a half melted. how much now was left on the ground friday night?

3½

Step-by-step explanation: Solving the problem by adding and subtracting to get the amount of snow that fell and melted and was left, we get the following:

Monday = no snow (0inch)

Tuesday = + 3inch

Wednesday = 3 - ½ = 2½ inch

Thursday = 2½ + 2½ = 5 inch

Friday = 5 - 1½ = 3½ inches snow left

answer: standard form is ax^2 + bx + c = 0

step-by-step explanation:

standard form is ax^2 + bx + c = 0

(2x + 1)(x - 2) = 0

distribute to get into standard form

2x^2 - 4x + x - 2 = 0

2x^2 - 3x - 2 = 0

a = 2, b= -3, c = -2

a is your answer

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source: