Ask question

Ask question

All categories

3 years ago

14

Are all rational equation solutions valid?

1 answer:

Semenov [28]3 years ago

8 0

Answer:

a

Step-by-step explanation:

You might be interested in

Solve the following system of equations: −2x + y = 1 −4x + y = −1

Katyanochek1 [597]

Answer:

<h2>x = 1, y = 3 → (1, 3)</h2>

Step-by-step explanation:

$\left\{\begin{array}{ccc}-2x+y=1\\-4x+y=-1&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}-2x+y=1\\4x-y=1\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad2x=2\qquad\text{divide both sides by 2}\\.\qquad x=1\\\\\text{Put it to the first equation:}\\\\-2(1)+y=1\\-2+y=1\qquad\text{add 2 to both sides}\\y=3$

5 0

3 years ago

Help quick please. Order the numbers from least to greatest.

Anastasy [175]

Answer:

$-2\frac{1}{4}$

Step-by-step explanation:

Mod of any number represents the absolute value of the number.

Therefore, $|-2\frac{1}{4}|=2\frac{1}{4}$ = 2.25

$-2\frac{1}{4}=-2.25$

$|1\frac{1}{4}|=1.25$

$\frac{3}{4}=0.75$

$|-1\frac{3}{4}|=1\frac{3}{4}=1.75$

$-1\frac{1}{4}=-1.25$

Now we can arrange these numbers in ascending order.

-2.25 < -1.25 < 0.75 < 1.25 < 1.75 < 2.25

Therefore, $-2\frac{1}{4}$

4 0

2 years ago

PLEASE HELP What is the volume?<br><br> 0.3 ft<br> 0.3 ft<br> 0.3 ft<br><br> cubic feet

Firlakuza [10]

0.3 is CB ft so 3€ is 4 in Us

8 0

2 years ago

Read 2 more answers

Write the log equation as an exponential equation. Log9 (2x-7) = 2x-3

antiseptic1488 [7]

Answer:

14

Step-by-step explanation:

they = to the same thing

5 0

3 years ago

The number of dollars per month it costs you to own a car is a function of the number of kilometers per month you drive it. Base

klasskru [66]

Y=1.22x
y is the cost and x is kilometers driven. I got 1.22 by dividing 366 by 300 to find how it costs per kilometer.

7 0

3 years ago