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3 years ago

5x+4y=-12 Y=-2x-9 What is x

Mathematics

2 answers:

statuscvo [17]3 years ago

7 0

Answer:

x=−8,y=7

Step-by-step explanation:

kaheart [24]3 years ago

5 0

Answer:

X = -16

Step-by-step explanation:

5x+4y=-12 Y=-2x-9

substitute the value of y

5x + 4(-2x - 9)=12

solve the equation

x=-16

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forsale [732]

Answer:

x = 4

Step-by-step explanation:

You have to remember the "Quotient Rule" for exponent having same base.

The quotient rule tells us that we can divide two powers with the same base by subtracting the exponents.

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Find dy/dx x=a(cost +sint) , y=a(sint-cost)

MissTica

Answer:

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Step-by-step explanation:

The relation between the $y$ and the $x$ in this question is given by parametric equations (with $t$ as the parameter.)

Make use of the fact that:

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Find $\begin{aligned} \frac{dx}{dt} \end{aligned}$ and $\begin{aligned} \frac{dy}{dt} \end{aligned}$ as follows:

$\begin{aligned} \frac{dx}{dt} &= \frac{d}{dt} [a\, (\cos(t) + \sin(t))] \\ &= a\, (-\sin(t) + \cos(t)) \\ &= a\, (\cos(t) - \sin(t))\end{aligned}$ .

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