1. A={a, b, c, d} and B= {a, b, c,} then; a. A ⊂ B
b. B ⊆ A
c. B ⊂ A
d. A ⊆ B

2. What is the coefficient of X in the expression y²x + y?
a. y²
b. y
c. 1
d. 0

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Two numbers have a sum of -19. one number is x. what expression represents the other number?

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18