Please help me <33 I don’t understand

d = 42

Step-by-step explanation:

since you have two angles which add up to a straight line, you know that they must equal 180°

simply

180 = (d + 7) + (3d + 5)

180 = 4d + 12

d = 42

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

m∠5 + m∠3 = m∠1   is true.

m∠5 + m∠6 = 180 is true

m∠2 +m∠3 = m∠6   is true

m∠2 +m∠3 +m∠5 = 180   is true