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2 years ago

Zalmon walks three fourhs of a mile in three tenths of an hour. what is his speed in miles per hour?

Mathematics

2 answers:

nadezda [96]2 years ago

7 0

(3/4) / (3/10) =
3/4 * 10/3 =
30/12 =
2 1/2 ( or 2.5) miles per hr

nataly862011 [7]2 years ago

4 0

2.5 miles per hour
Because 3/4 divided by 3/10 is equal to 2.5

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Answer:

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Step-by-step explanation:

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Step 2. Write the equation (using the slope and the points)

Here's how to do it:

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Answer:

I'm going to lay this out in a chart so it's a little easier to see:

F(x) = f(g(x))

x | f (x) | f ' (x) | g (x) | g ' (x)

--------------------------------------

-2 | 8 | 4 |

5 | | 3 | -2 | 6

Remember the chain rule, which says

(f (g (x))) ' = g ' (x) f ' (g (x))

When they ask for F ' (5), they are asking for (f (g (x))) ' when x = 5.

Using the chain rule, that's

F ' (5) = g ' (5) f ' (g (5))

We can simplify using the numbers provided.

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I hope that helps!

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