Please Determine which of the lines are parallel and which of the lines are perpendicular. Select all of the statements that are true. Line a passes through (−2, 8) and (5, 8).

Line b passes through (2, 0) and (4, 9).

Line c passes through (0, 6) and (5, 26).

Line d passes through (0, 8) and (4, 7).

a∥b

b∥c

a⊥b

b⊥c

a∥c

b∥d

a⊥c

b⊥d

a∥d

c∥d

a⊥d

c⊥d

Find the solution of system of equation y= x-4 y=4x+2

Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?