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3 years ago

Which of the following are solutions to the system graphed below.

Mathematics

1 answer:

Kisachek [45]3 years ago

4 0

Weird. I think you just need to look if the point falls on the shaded area. But only (-5,5) does ...

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It needs to be multiplied by 20%, aka 0.2 in decimal form

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2 years ago

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Find the missing value. (√24-√k)(√24+√k)=5

Anna [14]

Answer:

k = 19

Step-by-step explanation:

Identity

(a + b)(a - b) = a² - b²

Simplifying the LHS (Left Hand Side)

(√24-√k)(√24+√k)
(√24)² - (√k)²
24 - k

Equating to the RHS

24 - k = 5
k = 24 - 5
k = 19

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2 years ago

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Petunia seeds 40%, snapdragon seeds 42%, pansy seeds 45%.

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3 years ago

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Find an equation of the tangent line to the curve 2(x2+y2)2=25(x2−y2) (a lemniscate) at the point (−3,1). An equation of the tan

valina [46]

$2(x^2+y^2)^2=25(x^2-y^2)$

Let $y=y(x)$ , so that differentiating both sides wrt $x$ gives

$4(x^2+y^2)\left(2x+2y\dfrac{\mathrm dy}{\mathrm dx}\right)=25\left(2x-2y\dfrac{\mathrm dy}{\mathrm dx}\right)$

If $x=-3$ and $y=1$ , the above reduces to

$40\left(-6+2\dfrac{\mathrm dy}{\mathrm dx}\right)=25\left(-6-2\dfrac{\mathrm dy}{\mathrm dx}\right)\implies\dfrac{\mathrm dy}{\mathrm dx}=\dfrac9{13}$

This is the slope of the tangent line, which has equation

$y-1=\dfrac9{13}(x+3)\implies\boxed{y=\dfrac{9x+40}{13}}$

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2 years ago

Please Help! I'm Desperate.

KATRIN_1 [288]

My teacher always told me if you dont know the answer choose c.

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3 years ago