Two rafts are traveling in opposite directions on a straight river. the raft going with the current is traveling at a speed of 12 mph. the raft going against the current is traveling at a speed of 70 miles per hour. both rafts travel the river for two hours. which equation represents the situation? assume the raft traveling with the current travels x miles in the raft traveling against the current travels y miles. a. 12/x - 7/y = 1/2 b. 12x + 7y = 2 c. x/12 - y/7 = 2 d. x/12 + y/7 = 4 e. 12x + 7y = 4

6.(q^9)^2 a. 2q^18 b. q^18 c. q^81 d.q^11 7.(6q^6)^-4 a. 6q^1296 b. 1296q^2 c. 1/1296q^24 d. 6q^-24 8. what is the value of 12x^-3 y^-1 for x = -1 and y = 5? a. -12/5 b.-10 c.-0 d.5/12 9. (y^-5)^10y^10 a. y^-60 b. y^60 c. y^-150 d. y^150 find the simplified form of each expression. 10. (4/7^5)^2 a.8/14^10 b.16/49^25 c.16/49y^10 d.8/14y^25 11. determine if the number 3.43 times 10^-6 is written in scientific notation. if not, explain. a. yes; the number is written scientific notation. b. no; the first factor is not a number between 1 and 10. c. no; it is not written as a number times a power of 10

Is this a polynomial function? i need to know asap

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.