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horsena [70]
2 years ago
10

X = 11 1-4x + y = -23 Solve the system of equations.

Mathematics
2 answers:
mash [69]2 years ago
5 0
Y=20
You can plug in 11 for X and do the math from there on
7nadin3 [17]2 years ago
3 0
Y=20

Explanation:
1-4(11)+y=-23
1-44+y=-23
-43+(20)=-23
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What is the image of ( 0 , -6 ) after a reflection over the line y = x?
Alla [95]

Answer:

(-6, 0)

Step-by-step explanation:

(x, y) over y=x = (y, x)

so (0, -6) will be (-6, 0).

3 0
2 years ago
Hellpppppppppppppppp​
VLD [36.1K]

Answer:

15 cups

Step-by-step explanation:

5x3 is 15

even the denominator by multiplying.

do what you multiplied on the numerator.

4 0
2 years ago
Read 2 more answers
Help!! 50 points and brainliest!
Viktor [21]

Answer:

Second choice:

x=2t

y=4t^2+4t-3

Fifth choice:

x=t+1

y=t^2+4t

Step-by-step explanation:

Let's look at choice 1.

x=t+1

y=t^2+2t

I'm going to subtract 1 on both sides for the first equation giving me x-1=t. I will replace the t in the second equation with this substitution from equation 1.

y=(x-1)^2+2(x-1)

Expand using the distributive property and the identity (u+v)^2=u^2+2uv+v^2:

y=(x^2-2x+1)+(2x-2)

y=x^2+(-2x+2x)+(1-2)

y=x^2+0+-1

y=x^2

So this not the desired result.

Let's look at choice 2.

x=2t

y=4t^2+4t-3

Solve the first equation for t by dividing both sides by 2:

t=\frac{x}{2}.

Let's plug this into equation 2:

y=4(\frac{x}{2})^2+4(\frac{x}{2})-3

y=4(\frac{x^2}{4})+2x-3

y=x^2+2x-3

This is the desired result.

Choice 3:

x=t-3

y=t^2+2t

Solve the first equation for t by adding 3 on both sides:

x+3=t.

Plug into second equation:

y=(x+3)^2+2(x+3)

Expanding using the distributive property and the earlier identity mentioned to expand the binomial square:

y=(x^2+6x+9)+(2x+6)

y=(x^2)+(6x+2x)+(9+6)

y=x^2+8x+15

Not the desired result.

Choice 4:

x=t^2

y=2t-3

I'm going to solve the bottom equation for t since I don't want to deal with square roots.

Add 3 on both sides:

y+3=2t

Divide both sides by 2:

\frac{y+3}{2}=t

Plug into equation 1:

x=(\frac{y+3}{2})^2

This is not the desired result because the y variable will be squared now instead of the x variable.

Choice 5:

x=t+1

y=t^2+4t

Solve the first equation for t by subtracting 1 on both sides:

x-1=t.

Plug into equation 2:

y=(x-1)^2+4(x-1)

Distribute and use the binomial square identity used earlier:

y=(x^2-2x+1)+(4x-4)

y=(x^2)+(-2x+4x)+(1-4)

y=x^2+2x+-3

y=x^2+2x-3.

This is the desired result.

3 0
3 years ago
Read 2 more answers
How many liters would 60 mega-liters be?<br> Help
san4es73 [151]

Answer:

6e+7

Step-by-step explanation:

divide the volume value by 1e+6

5 0
3 years ago
Read 2 more answers
Log<br><img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%7D%2027" id="TexFormula1" title=" \frac{1}{3} 27" alt=" \frac{1}{
forsale [732]
Hi, I'd be glad to help you with this equation!

The answer is (9) 

Hope this helps. 
Have a great day!
6 0
3 years ago
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