Solve by elimination: 7x-9y=29 7x+2y=-15

Mathematics

1 answer:

Alexxandr [17]4 years ago

7 0

Answer:

x = 125/7 , y = -11/3

Step-by-step explanation:

7x - 9y = 29

7x + 2y = - 15

- - + (subtracting)

__________

0 - 12y = 44

y = 44/-12

y = - 11/3

Putting y in first equation,

7x - 9 (-11/3) = 29,we get

x = 125/7 or 17.8

Hope it helps!

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Derivative of (2x+5)^4(5x+2)^-2

Sveta_85 [38]

Use chain rule

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and also power rule
$\frac{d}{dx} x^m=mx^{m-1}$

so

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so
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simplify yourself

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3 years ago

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alukav5142 [94]

Answer:

a) y = |x/2 -2| +4

b) y = |x/2 -2| +2

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d) y = |(x-1)/2 -2| +3

Step-by-step explanation:

To translate the function f(x) by (h, k) in the (right, up) direction, you transform it to ...

g(x) = f(x -h) +k