Show that f(x)=12x^3-32x^2+17 has a zero between 2 and 3.

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

You could graph it. I'll do that at the bottom. What you need is a value that is - on either 2 or 3 and a plus on the other one.

y=12*2^3 - 32x^2 + 17

y = 12 * 8 - 32*2^2 + 17

y = 96 - 128 + 17

y = -15

Now when x = 3 should give you something above the x axis

y = 12*3^3 - 32*9 + 17

y = 324 - 288 + 17

y = 53

What this indicates is that somewhere between 2 and 3 the graph crosses the x axis. The graph should indication that.

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Greg used 1 inch tiles to help make a ruler what mistake did he make

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Answer: he didn't make a mistake?

Step-by-step explanation:

2y+5x=4 please help quickly

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Answer:

5x+2y=4

Step-by-step explanation:

Answer the question ready fast right now

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Answer:

<eba and <hbi are congruent angles

Step-by-step explanation:

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In Mexico, avocados are 48 pesos per kilogram. What is the cost, in cents, of an avocado that weighs 0.45 lb if the exchange rate if the exchange rate is 18 pesos to the dollar?

Answers

Answer:

55 cents

Step-by-step explanation:

Let's convert 0.45 lb to kilograms

2.20 lb = 1 kg is the conversion factor, hence:

$0.45lb*(1Kg)/(2.2lb)\n=(0.45)/(2.2)\n=0.2045Kg$

So that's 0.2045 kg

Since 48 pesos is for 1 kg, hence for 0.2045 kg, the cost (in pesos) is:

0.2045 kg * 48 = 9.82 pesos

Now, we know 18 pesos is 100 cents (1 dollar), so how much is 9.82 pesos?? (let number of cents be X)

$(18Pesos)/(100Cents)=(9.82Pesos)/(X)\n18X=9.82*100\n18X=982\nX=(982)/(18)\nX=54.6 Cents$

That's roughly 55 cents

Please help please I am begging you

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Answer:

Step-by-step explanation:

9 (x + 1) = 9*x + 9*1 = 9x + 9

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Answer:

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