Mathematics, 17.07.2019 17:00, Itsyourgirllulu
Naircraft travels with the wind for 120 miles in 0.75 of an hour. the return trip is flown against the wind and takes exactly 1 hour. which system of linear equations represents x, the speed of the plane in miles per hour, and y, the speed of the wind in miles per hour? recall the formula d = rt. 0.75(x + y) =â120 x â y =â120 0.75(x â y)=â120 x + y =â120 120(x + y)â=â0.75 120(x â y)â=â1 120(x â y)â=â0.75 120(x + y)â=â1
Answers: 1
Mathematics, 21.06.2019 22:00, Jasten
(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?
Answers: 3
Mathematics, 22.06.2019 05:00, cadez
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 : Ξ1- Ξ2 = 0; ha : Ξ1- Ξ2 â 0 b. h0 : Ξ1- Ξ2 âĨ 0; ha : Ξ1- Ξ2 < 0 c. h0 : Ξd âĨ 0; ha : Ξd < 0 with Ξd = Ξ2- Ξ1 d. h0 : Ξd = 0; ha : Ξd â 0 with Ξd = Ξ2- Ξ1 e. h0 : Ξ1- Ξ2 = 0; ha : Ξ1- Ξ2 âĨ 0
Answers: 2
Naircraft travels with the wind for 120 miles in 0.75 of an hour. the return trip is flown against t...
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