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RUDIKE [14]
3 years ago
5

PLEASE HELP!

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
3 0

Answer:

<h2>x = 6 and y = -6 → (6, -6)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}-4x-2y=-12\\2x+4y=-12&\text{multiply both sides by 2}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-4x-2y=-12\\4x+8y=-24\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad6y=-36\qquad\text{divide both sides by 6}\\.\qquad\qquad\boxed{y=-6}\\\\\text{Put the value of y to the second equation:}\\\\2x+4(-6)=-12\\2x-24=-12\qquad\text{add 24 to both sides}\\2x=12\qquad\text{divide both sides by 2}\\\boxed{x=6}

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If g(x) = 2x - 5 and h(x) = 3x + 7, then g(h(x)) = ?
Orlov [11]
G(h(x)) = 2(3x+7) - 5
            = 6x + 14 - 5
            = 6x + 9
8 0
3 years ago
Find three ratios that are equivalent to 2 4. A. 8 16 B. 10 24 C. 4 8 D. 3 5 E. 6 12 F. 12 6
xenn [34]

Answer:

A, C, and E good luck

Step-by-step explanation:

3 0
3 years ago
Solve using<br> elimination <br> X- 2y = 3<br> 3x - y = 2
FrozenT [24]

<u>Answer:</u> x = 1/5 and y= -7/5

Step-by-step explanation: Let's solve your system by elimination.

Multiply the first equation by -3,and multiply the second equation by 1.

-3 (x - 2y = 3)

1 (3x - y = 2)

Becomes:

-3x + 6y = -9

3x -y = 2

Add these equations to eliminate x:

5y = -7

Then solve 5y = -7

5y/7 = -7/5

y = -7/5

Now that we‘ve found y, let’s plug it back in and solve for x.

Write down an original equation:

x - 2y = 3

<h3>Substitute -7/5 for y in x - 2y = 3:</h3><h3>x - 2 (-7/5) = 3</h3><h3>x + 14/5 = 3</h3><h3>x 14/5 + -14/5 = 3 + -14/5 (Add (-14)/5 to both sides)</h3><h3>x = 1/5</h3><h3><u>Answer: </u></h3><h3>x = 1/5 and y = -7/5</h3><h3 /><h3 /><h3 />

6 0
3 years ago
Data on the weights​ (lb) of the contents of cans of diet soda versus the contents of cans of the regular version of the soda is
Verdich [7]

Answer:

-17.76

Step-by-step explanation:

Don't have a full explanation, but I'm pretty sure this is correct. I hope it helps, Good Luck!!

4 0
3 years ago
X^2-4x-5x=0<br><img src="https://tex.z-dn.net/?f=x%20%7B2%7D%20%20-%204x%20-%205x%20%3D%200" id="TexFormula1" title="x {2} - 4x
Bogdan [553]

Answer:

x = 9 or x = 0

Step-by-step explanation:

Solve for x over the real numbers:

x^2 - 4 x - 5 x = 0

x^2 - 4 x - 5 x = x^2 - 9 x:

x^2 - 9 x = 0

Factor x from the left hand side:

x (x - 9) = 0

Split into two equations:

x - 9 = 0 or x = 0

Add 9 to both sides:

Answer: x = 9 or x = 0

7 0
3 years ago
Read 2 more answers
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