Use the elimination method to solve the following system. 6x – 7y = –8 –x – 4y = –9 (–6, –3)

(0, 4)

(–3, 8)

(1, 2)

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:

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.