D because those options do not intersect and are part of the universal set
60°; all of of the angles of a triangle add up to 180° so 180 divided by 3 equals 60°.
Answer:
{-8,28}
Step-by-step explanation:
|10-x|=18
The absolute value has two solutions, one positive and one negative.
10-x = 18 and 10-x = -18
Subtract 10 from each side
10-10-x = 18-10 10-10-x=-18-10
-x = 8 -x = -28
Multiply each side by -1
x = -8 x = 28
x = Nick's age y = Sara's age
Nick is 8 years older than Sara, therefore
y = x - 8
