2 years ago

3x+y=23, 6x-y=50, what is the value of x and y

Mathematics

1 answer:

Mice21 [21]2 years ago

4 0

Answer:

3x+y=23

6x-y=50

2(3x+y)=2(23)

6x+2y=46

(6x-y)-(6x+2y)=50-46

-3y=4

y=-4÷3

=-4/3

x=[23-(-4/3)]÷3

=24/1/3÷3

=73/3÷3

=73/9

You might be interested in

¿Cuál de los siguientes números es

Olegator [25]

Answer:

Step-by-step explanation:

6 0

3 years ago

Pippa is holding the end of her kite string 1.4 m above the ground. The kite string rises at 63° angle of elevation. Pippa has l

Monica [59]

68.2, is this correct?

5 0

3 years ago

Read 2 more answers

If a line had a rise of 5 and run of 10, what<br> would it's simplified slope equal?

11Alexandr11 [23.1K]

Answer: Yes it would

Step-by-step explanation:

3 0

2 years ago

Find the value(s) of x such that f''(x)=0

Goryan [66]

$f(x)=\dfrac x{x^2+2}\implies f'(x)=\dfrac{2-x^2}{(x^2+2)^2}\implies f''(x)=\dfrac{2x^3-12x}{(x^2+2)^3}$

The denominator is always positive, so any $x$ for which $f''(x)=0$ is determined only by the numerator:

$2x^3-12x=0\implies f''(x)=0$
$2x^3-12x=2x(x^2-6)=2x(x-\sqrt6)(x+\sqrt6)=0\implies x=0,\pm\sqrt6$

4 0

2 years ago

Read 2 more answers

Please help me to just question :)

adoni [48]

Answer:

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers