Mei and Lea each improved their yards by planting grass sod and ivy. They bought their supplies from the same store. Mei spent $51 on 9 ft2 of grass sod and 3 pots of ivy. Lea spent $71 on 13 ft2 of grass sod and 3 pots of ivy. Find the cost of one ft2 of grass sod and the cost of one pot of ivy.

What is the quotient of -3/8and-1/3?

Aparallel system functions whenever at least one of its components works. consider a parallel system of n components, and suppose each component works independently with probability 0.5. find the conditional probability that component n works given that the system is working

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)] =?