3x + 2y = A 5x + y = B Eliminating the variable y from the system of equations results in -7x =

1 answer:

5 0

The answer is A
You would multiply the second equation by -2 to clear the 'y'.
This leaves -10x = 2B and 3x = A
When combining these we get -7x = A - 2B

You might be interested in

How do I find the value of the expression 8x9-7+4x5 EXPLAIN PLEASE

AlladinOne [14]

Please don't get mad at me but I did this on tn ready the other day and we learned about it but what you would do is multiply 8x9 then subtract 7 from the product and add 4 to the answer you got and then multiply it by that answer by 5 and you should get your answer. I hope I helped you?

7 0

3 years ago

Read 2 more answers

Find the domain for the particular solution to the differential equation dy dx equals the quotient of 3 times y and x , with ini

Svetach [21]

For this case we have the following difference equation:
$dy / dx = 3xy
$
Applying separable variables we have:
$dy / y = 3xdx
$
Integrating both sides we have:
$\int\ ({1/y}) \, dy = \int\ {3x} \, dx$
$ln (y) = (3/2) x ^ 2 + C
$
applying exponential to both sides:
$exp (ln (y)) = exp ((3/2) x ^ 2 + C)

 y = C * exp ((3/2) x ^ 2)$
For y (1) = 1 we have:
$C = 1 / (exp ((3/2) * 1 ^ 2))

C = 0.2$
Thus, the particular solution is:
$y = 0.2 * exp ((3/2) x ^ 2)
$
Whose domain is all real.
Answer:
y = 0.2 * exp ((3/2) x ^ 2)
Domain: all real numbers

6 0

3 years ago

The Doppler effect is an effect produced by a moving source of sound or electromagnetic waves due to the relative motion of a so

IgorC [24]

Answer:

Step-by-step explanation:

4 0

3 years ago

Which is a true statement about any two chords that are the same distance from the center of a circle?

stepladder [879]

If two cords are the same distance from the center of a circle than both cords are congruent

8 0