Mathematics, 22.04.2020 09:53 prelogical
A clothing store is having a sale on shirts and jeans. Five shirts and 3 pairs jeans cost $220. Six shirts and 2 pairs of jeans cost $200. How much is the cost of one shirt? How much is the cost of pair of jeans?
Answers: 1
Mathematics, 21.06.2019 19:00
The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p β 2x + 2(20) yes, because p β 2x + 2(20) yes, because p = 2x + 2(20)
Answers: 1
Mathematics, 21.06.2019 19:30
Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, β3) and (β6, β3). where would the upper vertices be on the grid?
Answers: 1
Mathematics, 21.06.2019 20:50
An automobile assembly line operation has a scheduled mean completion time, ΞΌ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.
Answers: 3
A clothing store is having a sale on shirts and jeans. Five shirts and 3 pairs jeans cost $220. Six...
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