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3 years ago

Martin wants to buy 4 plastic figures that cost $17 each. How much money does he need to save to purchase the figure?

2 answers:

6 0

Well, Martin may have to save up for a bit! If Martin wants 4 figures that cost 17 dollar each, we can find Martin's total by multiplying 4 by 17. 4 x 17 = 68, so Martin would need to save up 68 dollars if he wants to buy 4 figurines. I hope that helps! Have a great day! :)

Nat2105 [25]3 years ago

3 0

1 figure = $17 so you multiply 4 and 17 to get 68
Martin will need to save $68

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2 years ago

1. Let f(x, y) be a differentiable function in the variables x and y. Let r and θ the polar coordinates,and set g(r, θ) = f(r co

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We substitute in what we had:

$g_{r}(r,\theta)=f_{x}( rcos(\theta),rsin(\theta))cos(\theta)+f_{y}(rcos(\theta),rsin(\theta))sin(\theta)$

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$g_{r}(\sqrt{2},\frac{\pi}{4})=f_{r}(1,1)=f_{x}(1,1)cos(\frac{\pi}{4})+f_{y}(1,1)sin(\frac{\pi}{4})$

Because of what we supposed:

$g_{r}(\sqrt{2},\frac{\pi}{4})=f_{r}(1,1)=-2cos(\frac{\pi}{4})+3sin(\frac{\pi}{4})$

And we operate to discover that:

$g_{r}(\sqrt{2},\frac{\pi}{4})=-2\frac{\sqrt{2}}{2}+3\frac{\sqrt{2}}{2}$

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