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2 years ago

(20x^2 – 3x – 9)/(4x – 3)

Mathematics

1 answer:

nordsb [41]2 years ago

4 0

Answer:

5x+3

Step-by-step explanation:

Rewrite the expression to 20x^2-3x-9/4x-3

Factor 20x^2+12x-15x-9/4x-3

Factor 4x*5x+3-3(5x+3)/4x-3

Factor (5x+3)*(4x-3)/4x-3

Solution then becomes 5x+3 as stated above

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Brainliest for best answer

Mashcka [7]

Answer:

1/2 and 6/1

i belive you cross multiply

so you would get 12/1

so n=12

hopw i helped

Step-by-step explanation:

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3 years ago

Find the value of x in 110x +2400 = 100x +3000

aleksley [76]

Answer:x=60

Step-by-step explanation:

110x+2400=100x+3000

-100x. -2400

10x= 600

X=60

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2 years ago

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When do we use the addition and subtraction formulas for sine or cosine?

777dan777 [17]

When we need the cosine of the sum of two angles, we use the addition formula for cosine.

When we need the sine of the difference of two angles, we use the difference formula for sine.

Let's try one. Say we needed to know

$\cos 15^\circ
$

We're only expected to know the trig functions of 30/60/90 and 45/45/90 triangles. Fortunately, $15^\circ = 45^\circ - 30^\circ$ so

$\cos 15^\circ = \cos( 45^\circ - 30^\circ )$

$= \cos( 45^\circ) \cos(30^\circ ) + \sin(45^\circ) \sin(30^\circ)$

$= \dfrac{\sqrt{2}}{2} \cdot \dfrac{ \sqrt{3}}{2} + \dfrac{\sqrt{2}}{2} \cdot \dfrac{1}{2}$

$\cos 15^\circ = \frac{1}{4} (\sqrt{6} + \sqrt{2})$

4 0

3 years ago

⎧ y=2x+3 y=−3x+3

masha68 [24]

What exactly do u want us to do?

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3 years ago

The slope of a line that is perpendicular to a line whose slope is 3/8 is

Molodets [167]

Answer:

-8/3

Step-by-step explanation:

We know that lines that are perpendicular have slopes that multiply to -1

m1 * m2 = -1

We know one slope is 3/8 and are looking for the perpendicular slope m2

3/8 * m2 = -1

Multiply each side by 8/3 to find m2

3/8*8/3 *m2 = -1*8/3

m2 = -8/3

5 0

2 years ago

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