50 POINTS HELP PLEASE WILL GIVE BRAINIEST TO CORRECT ANSWER When two pipes fill a pool together, they can finish in 4 hours. If one of the pipes fills half the pool then the other takes over and finished filling the pool, it will take them 9 hours. How long will it take each pipe to fill the pool if it were working alone?

Set up and solve a proportion for the following application problem. if 55 pounds of grass seed cover 404 square feet, how many pounds are needed for 7272 square feet?

Find a conversion factor between square centimeters and square meters. write it in three forms. square centimeters = 1 square meter

The investigating team suspected that there were differences in the cost of repairing cars in workshop i and workshop ii. the investigating team suspected that the costs raised by workshop i were greater than workshop ii. for that they tested the repair of 15 cars in each workshop to see the cost of repairs.the decision of the right hypothesis to prove the suspicion above is a. h0 : μ1- μ2­ = 0; ha : μ1- μ2­ ≠ 0 b. h0 : μ1- μ2 ≥ 0; ha : μ1- μ2 < 0 c. h0 : μd ≥ 0; ha : μd < 0 with μd = μ2- μ1 d. h0 : μd = 0; ha : μd ≠ 0 with μd = μ2- μ1 e. h0 : μ1- μ2 = 0; ha : μ1- μ2 ≥ 0