Answer:
5y-10x=35
Step-by-step explanation:
The standard way to write a linear relationship between the x and y variables is through a homogeneous equation as a combination of the x and y variables with real coefficients.
Use Photomath, just take a picture of the question and it would give the right answer
Answer:
the A is right
Step-by-step explanation:
We have (f+g)(x) = f(x) +g(x)
So f(x) + g(x) = 3x^2 + 2x – 1 and we know g(x) = 2x -2
or f(x) + 2x-2 = 3x^2 + 2x – 1
f(x) = 3x^2 + 2x – 1 - ( 2x -2)
f(x) = 3x^2 + 2x – 1 - 2x +2 \
finally
f(x) = 3x^2 + 1, and the A is right.
Have a good day
Answer:
X = 3
Y = 100
Step-by-step explanation:
The best way to solve equations like this is to plug & chug.
First, choose an equation and replace the Y variables with the y=... equation
Y = 30x + 10
(20x + 40) = 30x + 10
Then isolate the variable by subtracting 10 and 20x from both sides
40 - 10 = 30x - 20x
30 = 10x Divide by 10
3 = x
Y is much simpler; Plug x = 3 into one or both equations, plugging it into both will check your answer.
y = 20(3)+40
y = 60 + 40
y = 100
To double check math plug both variables into the other equation.
100 = 30(3) + 1=
100 = 90 +10
100 = 100