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rodikova [14]
3 years ago
12

Elena is 56 inches tall. What is her height in centimeters? (Note: 100 inches = 254 centimeters) What is her height in meters?

Mathematics
1 answer:
user100 [1]3 years ago
6 0

Answer: 1.4224 meters

Step-by-step explanation:

We are given that , Elena is 56 inches tall.

Also , it is given that 100 inches = 254 centimeters

Then, by the UNITARY METHOD,

one inch = \dfrac{254}{100} centimeters

⇒ one inch =2.54 centimeters

Now, the height of Elena = 56 inches

Then, the height of Elena in centimeters = 56\times2.54

The height of Elena in centimeters =142.24\text{ centimeters}

Also, 1 meter = 100 centimeters

Then 1 centimeter = 0.01 meter

The height of Elena in meters = 142.24\times0.01

The height of Elena in meters =1.4224 meters

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Step-by-step explanation:

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Evaluate................
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Answer:

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Step-by-step explanation:

1. Replace x in the function definition with the function's argument, then simplify.

h(x) = 7x +4q

h(8q² -2q) = 7(8q² -2q) +4q = 56q² -14q +4q = 56q² -10q

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2. Same as the first problem.

k(x) = 8x +7q

k(2q² +3q) = 8(2q² +3q) +7q = 16q² +24q +7q = 16q² +31q

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Comment on the problem

In each case, the function definition says the function is not a function of q; it is only a function of x. It is h(x), not h(x, q). Thus the "q" in the function definition should be considered to be a literal not to be affected by any value x may have. It could be considered another way to write z, for example. In that case, the function would evaluate to ...

h(8q² -2q) = 56q² -14q +4z

and replacing q with some value (say, 2) would give 196+4z, a value that still has z as a separate entity.

In short, I believe the offered answers are misleading with respect to how you would treat function definitions in the real world.

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Answer:

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Step-by-step explanation:

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