If (-2,1) is the midpoint of the line segment ST and the coordinates of S are (3,9), find the coordinates of T.

T = (-7,-7)

Step-by-step explanation:

S = (3,9) = (x₁,y₁)

M = (-2,1) = (x,y)

T = (2x-x₁,2y-y₁)

= (2×-2-3,2×1-9)

=(-4-3,2-9)

=(-7,-7)

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1