Mathematics, 22.06.2019 20:30 shaheedbrown06

# The united states uses 1.4×1019 j of electrical energy per year. assume, that all this energy came from the fission of 235u, which releases 200 mev per fission event. assume that all fission energy is converted into electrical energy. part a how many kilograms of 235u would be used per year? express your answer to two significant figures and include the appropriate units. m m = nothing nothing request answer part b how many kilograms of uranium would have to be mined per year to provide that much 235u? (recall that only 0.70% of naturally occurring uranium is 235u.) express your answer to two significant figures and include the appropriate units.

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Mathematics, 21.06.2019 14:30

Write a function that matches the description. a cosine function has a maximum of 5 and a minimum value of -5. f (r) =

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Mathematics, 21.06.2019 16:40

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

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Mathematics, 21.06.2019 17:00

Find the roots of the equation below. x^2 - 6x + 12 = 0

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Mathematics, 21.06.2019 20:00

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

Answers: 1

The united states uses 1.4×1019 j of electrical energy per year. assume, that all this energy came f...

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