Consider the system y= 4x-3 y= x+3

Mathematics

1 answer:

WARRIOR [948]3 years ago

4 0

Answer: x= 2 y=5 or (x, y) = (2, 5)

Step-by-step explanation:

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Paha777 [63]

$\bf \cfrac{n^2+3n+2}{n^2+6n+8}-\cfrac{2n}{n+4}\implies \cfrac{n^2+3n+21}{(n+4)(n+2)}-\cfrac{2n}{n+4}
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\textit{so our LCD will just be (n+4)(n+2)}
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\cfrac{n^2+3n+2~~~~-~~~~(n+2)(2n)}{(n+4)(n+2)}
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\cfrac{n^2+3n+2~~~~-~~~~(2n^2+4n)}{(n+4)(n+2)}
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\cfrac{-(n^2+n-2)}{(n+4)(n+2)}\implies \cfrac{-\underline{(n+2)}(n-1)}{(n+4)\underline{(n+2)}}\implies \cfrac{-(n-1)}{n+4}\implies \cfrac{1+n}{n+4}$

3 0

3 years ago

Find LK A) 9 B) 8 C) 6 D) 17

mina [271]

Answer:

D because I'm literally a genius

4 0

3 years ago

: If tan A=- 9/13 and 0 < A < 180, find, without using tables or calculators, the value of

stich3 [128]

Answer: $\bold{\sin A=\dfrac{9\sqrt{10}}{50}\qquad \cos A=-\dfrac{13\sqrt{10}}{50}}$

Step-by-step explanation:

0° < A < 180° so it is in Quadrant I or II

since tan A is negative, it is in Quadrant II ---> (-x, +y)

$\text{Given}:\tan A=\dfrac{y}{x}\ =\dfrac{9}{-13}$

Next, find the hypotenuse given that x = -13 and y = 9

(-13)² + (9)² = r²

250 = r²

5√10 = r

$\sin A = \dfrac{y}{r}\quad =\dfrac{9}{5\sqrt{10}}\bigg(\dfrac{\sqrt{10}}{\sqrt{10}}\bigg)\quad =\large\boxed{\dfrac{9\sqrt{10}}{50}}\\\\\\\\\cos A = \dfrac{x}{r}\quad =\dfrac{-13}{5\sqrt{10}}\bigg(\dfrac{\sqrt{10}}{\sqrt{10}}\bigg)\quad =\large\boxed{-\dfrac{13\sqrt{10}}{50}}$

8 0

3 years ago

Find the unknown measure of the rectangle 9m perimeter=42 meters

Harman [31]

12m; if one side is 9m then that means 42 - 9 - 9 would yield the size of the two remaining sides together. 42-18=24 24 divided between the two sides left means each remaining side had to be 12m

4 0

3 years ago

4x - 3y= 20 Solve for y plz show work plz

emmasim [6.3K]

Answer:

Simplifying
4x + -3y = 20

Solving
4x + -3y = 20

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3y' to each side of the equation.
4x + -3y + 3y = 20 + 3y

Combine like terms: -3y + 3y = 0
4x + 0 = 20 + 3y
4x = 20 + 3y

Divide each side by '4'.
x = 5 + 0.75y

Simplifying
x = 5 + 0.75y

God bless you & have a beautiful rest of your Day or Night!

3 0

3 years ago

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