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Lilit [14]
2 years ago
13

Can someone help me????? ​

Mathematics
1 answer:
Lilit [14]2 years ago
7 0

\dfrac{9x^2}{y^2} -3x = 5 w\\\\\implies 9x^2  - 3x y^2 = 5wy^2 ~~~;[\text{Multiply both sides by}~ y^2]\\\\\implies 5wy^2 + 3xy^2 = 9x^2\\\\\implies y^2(5w +3x) = 9x^2\\\\\implies y^2 = \dfrac{9x^2}{5w +3x}\\\\\\\implies y = \pm \sqrt{\dfrac{9x^2}{5w +3x}} = \pm\dfrac{3x}{\sqrt{5w +3x}}

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Fittoniya [83]
I think the answer is 265
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3 years ago
Which function is a quadratic function? u(x) = –x + 3x2 – 8 v(x) = 2x2 + 8x3 + 9x y(x) = x2 + 3x5 + 4 z(x) = 7x2 + 2x3 – 3
hichkok12 [17]

Answer:

u(x) = –x + 3x2 – 8

Step-by-step explanation:

The functions are;

u(x) = –x + 3x2 – 8

v(x) = 2x2 + 8x3 + 9x

y(x) = x2 + 3x5 + 4

z(x) = 7x2 + 2x3 – 3

A quadratic function is a function that has the form  f(x) = ax2 + bx + c where a, band c are numbers with a not equal to zero. The maximum degree must be 2.

Among all the options, the one that matches the form is;

u(x) = –x + 3x2 – 8

6 0
3 years ago
Read 2 more answers
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DiKsa [7]

Answer:

4.002

Step-by-step explanation:

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6 0
3 years ago
2(x/8 + 3) = 7 + 1/4x what is x
malfutka [58]

Answer:

x1 = 2 -\sqrt{5}

x2= 2 +\sqrt{5}

Step-by-step explanation:

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x^2 - 4x -1 = 0

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5 0
3 years ago
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Lana71 [14]

Step 1. Take out the constants

(4 * 7)xx^2

Step 2. Simplify 4 * 7 to 28

28xx^2

Step 3. Use the Product Rule

28x^1 + 2

Step 4. Simplify 1 + 2 to 3

28x^3

3 0
3 years ago
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