v² The cost per hour for fuel to run a train is dollars, where v is the speed of the train in miles per hour. (Note that the cost goes up as the square of the speed.) Other costs, including labor, are $420 per hour. How fast should the train travel on a 360-mile trip to minimize the total cost for the trip? Write the total cost C as a function of the speed v. C(v) = (Use integers or fractions for any numbers in the expression.)

Q: 24 30

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Q: 9) 60

A: The figure is

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A: Consider the given expression as 411×59. 411×59=4×511×9=2099

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A: Given data:   The given expression is 270/6.     The number 270 can be written as, 270=3×90=3×2×45

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Q: only

A: Solution of the problem as follows

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Q: 4. Expand and simplify (2x + 3)*

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Q: 3) 24 12

A: We can find the value of x as below

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A: Five time 2 means multiplication of 5 and 2

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A: Here we take a general matrix of the given set then find the basis.

Q: 58)1,325

A: Quotient is 22 Remainder is 49

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A: Given triangle is What is another side length?

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A: the given expression is: we have to find the value of the given expression.

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Q: FIND n +n?

A: Check convergence of ∑n=1∞ 2n+n2:Apply the constant multiplication rule:  ∑c·an=c·∑an=2·∑n=1∞…

Q: —5л 6.

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A: If A is a 4×3 matrix, then we need to find the largest possible dimension of the row space of A.…

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A:

Q: 53. Faxt3

A: Given that, xa-1=ax+3 We need to solve it for x.

Q: How many elements does it contain?  I forgot to add that part.

A: From the above part we haven(C) = n(B) ={ (1,4),(4,1),(2,3),(3,2) }n(CB) = { (2,3),(3,2) }