Which ratio is not equivalent to the others? 3 to 1 6 to 3 9 to 3 12 to 4 •

Mathematics

1 answer:

Bogdan [553]3 years ago

3 0

The answer that is correct is 6:3.

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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

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

7 0

3 years ago

-2×-7y=30 7×+4y=18 ×= y=

Sati [7]

Answer:

Answer is -7 Hope this helps :D

Step-by-step explanation:

6 0

3 years ago

How do you simplify 420/450?

MatroZZZ [7]

Find the GCD (or HCF) of numerator and denominator
GCD of 420 and 450 is 30Divide both the numerator and denominator by the GCD
(420/30)/(450/30)Reduced fraction: 14/15

Equivalent fractions

7 0

3 years ago

Read 2 more answers

C=5/9(F-32) solve for F

mina [271]

F= 9/5 C + 32
or
F= 9/5(C+32)
 Hoped this helped:)

7 0

3 years ago

Which explains whether or not the values in the table represent a direct variation?

Assoli18 [71]

Answer: