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A medical equipment industry manufactures X-ray machines. The unit…

A medical equipment industry manufactures X-ray machines. The unit cost C  (the cost in dollars to make each X-ray machine) depends on the number of machines made. If  X machines are made, then the unit cost is given by the function C(x)=0.1x^2-68x+21,823 . What is the minimum unit cost?Don’t round answer  

On a recent trip to the convenience​ store, you picked up 3…

On a recent trip to the convenience​ store, you picked up 3 gallons of​ milk,6 bottles of​ water, and 5 ​snack-size bags of chips. Your total bill​ (before tax) was ​$27.30. If a bottle of water costs twice as much as a bag of​ chips, and a gallon of milk costs ​$2.20 more than a […]

1- Use the TI-84 Plus calculator to find the z -score for which the…

1- Use the TI-84 Plus calculator to find the z -score for which the area to its right is 0.36 . Round the answer to two decimal places. 2- A normal population has mean =μ60 and standard deviation =σ17 .   (a) What proportion of the population is greater than 100 ?(b) What is the […]

A deck of cards in a game contains all four suits (Clubs ♣ and…

A deck of cards in a game contains all four suits (Clubs ♣ and Spades ♠, which are black, and Hearts ♥ and Diamonds ♦, which are red), but only the cards with values 5, 6, 7, 8, 9, and 10.   How many different 5- card hands can be formed using this deck? How many […]

Question 1     Prove that ΔABC and ΔEDC are similar.    a….

Question 1  Prove that ΔABC and ΔEDC are similar.   a. shows the corresponding sides are proportional; therefore, ΔABC ~ ΔEDC by the SAS Similarity Postulate.  b.  ∠DCE is congruent to ∠BCA by the Vertical Angles Theorem and shows the corresponding sides are proportional; therefore, ΔABC ~ ΔEDC by the SAS Similarity Postulate.  c. ∠E and ∠A are right […]

A lap-top computer that cost a dealer $585.00less…

A lap-top computer that cost a dealer $585.00less 33&1/3%,16&2/3%, is marked up 183&1/3% of cost. For quick sale, the lap-top was reduced 66&2/3%. (a) What was the cost? (Do not include the $ sign in your answer.) (b) What was the regular selling price? (Do not include the $ sign in your answer.) (c) What […]