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kap26 [50]
3 years ago
13

5x +5y=10, x+8y=9 pls solve x and y

Mathematics
2 answers:
umka21 [38]3 years ago
6 0

x = 1

y = 1

substitute the numbers in and they make sense

Mamont248 [21]3 years ago
3 0

Factor out the common term 55

5(x+y)=10

Divide both sides by 55

x+y=10/5

Simplify

Subtract y from both sides

<u>x=2-y  </u>

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7. If F(x) = f(g(x)), where f(-2) = 8, f'(-2) = 4, f'(5) = 3, g(5)=-2, gʻ(5) = 6.. Find F'(5) <br>​
serious [3.7K]

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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)

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

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5 | | 3 | -2 | 6

Remember the chain rule, which says

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

Using the chain rule, that's

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