4 :A shopkeeper buys 100 kg of rice. He sells 81/4 kg on the first day and 51/2 kg on the second day. How much rice is left to sell?

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

answer: c

(2, -4)

goes 7 to the

(9, 4)

easy