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MakcuM [25]
3 years ago
7

1. Keith has 224 books in his library. He bought several books at the yard sale over the weekend. He now has 366 books in his

Mathematics
1 answer:
otez555 [7]3 years ago
8 0

Answer:

224 + x = 336

Step-by-step explanation:

336-224=112

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Answer:

The answer is C

Step-by-step explanation:

All of the numbers are all different a function is when there are no same numbers

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What expression is equivalent to -14.8-4b-(17.1-3b)
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If f(x) = 8 - 4x, find the value of x when f(x) = -12.
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A heated piece of metal cools according to the function c(x) = (.5)x − 7, where x is measured in hours. A device is added that a
Mama L [17]

Answer:

Option (b) is correct.

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Step-by-step explanation:

  Given : A heated piece of metal cools according to the function  c(x)=(0.5)^{x-7} ,  where x is measured in hours and then a cooling device id added that aids in cooling according to the function h(x)=-x-2

We have to determine the temperature of the metal after two hours.

Let w(x) denotes the temperature of metal .

Thus, w(x) can be given by function c(x) + h (x) = [c + h](x)

Thus, w(x)=[c+h](x)\\\\w(x)=(0.5)^{x-7}+(-x-2)\\\\ , where x is measured in hours.

Thus, after two hours that is when x = 2

the temperature of metal is given by w(2)

w(x)=(0.5)^{x-7}+(-x-2)\\\\ w(2)=(0.5)^{2-7}+(-2-2)

Solving , we get,

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