Ask question

Ask question

All categories

3 years ago

5

(x^2+3y-3) - (-2x^2+3y-1)

1 answer:

Vitek1552 [10]3 years ago

5 0

$(x^2+3y-3) - (-2x^2+3y-1)$
Apply plus/minus rule.
-(-a)=a amd -(a)=-a
$(x^2+3y-3) - (-2x^2+3y-1)=x^2+3y-3+2x^2-3y+1
$
$=x^2+3y-3+2x^2-3y+1 \\
Add \ like \ terms \\
=3x^2 - 2 \\$
$Answer: \ 3x^2-2$

You might be interested in

Which expression is equivalent to the following complex fraction?

jeka57 [31]

$\dfrac{\frac{1}{x}-\frac{1}{y}}{\frac{1}{x}+\frac{1}{y}}=\dfrac{\frac{y}{xy}-\frac{x}{xy}}{\frac{y}{xy}+\frac{x}{xy}}=\dfrac{\frac{y-x}{xy}}{\frac{y+x}{xy}}=\dfrac{(y-x)xy}{(y+x)xy}=\dfrac{y-x}{y+x}$

Answer D.

6 0

2 years ago

In which quadrant is the ordered pair ( 7, -8 ) located? *

Paul [167]

Answer:

i think IV

Step-by-step explanation:

because of the picture

4 0

2 years ago

Read 2 more answers

Pratap puri rowed 10 miles down a river in 2 hours, but the return trip took him 2 and one half hours. Find the rate pratap can

N76 [4]

Answer:

<em>Rate of Pratap in still water is 4.5 miles/hour and rate of current is 0.5 miles/hour.</em>

Step-by-step explanation:

Pratap Puri rowed 10 miles down a river in 2 hours, but the return trip took him 2.5 hours.

We know that, $Speed = \frac{Distance}{Time}$

So, the <u>speed of Pratap with the current</u> will be: $(\frac{10}{2})miles/hour = 5$ miles/hour

and the <u>speed of Pratap against the current</u> will be: $(\frac{10}{2.5})miles/hour = 4$ miles/hour.

Suppose, the rate of Pratap in still water is $x$ and the rate of current is $y$ .

So, the equations will be........

$x+y= 5 .............................. (1)\\ \\ x-y=4 .............................. (2)$

Adding equation (1) and (2) , we will get......

$2x=9\\ \\ x=\frac{9}{2}= 4.5$

Now, plugging this $x=4.5$ into equation (1), we will get.....

$4.5+y=5\\ \\ y=5-4.5 =0.5$

Thus, Pratap can row at 4.5 miles per hour in still water and the rate of the current is 0.5 miles/hour.

6 0

3 years ago

I dont understand this please help

Alex787 [66]

Answer:

Its asking you which one is greater or less than. Hope this help?

Step-by-step explanation:

6 0

3 years ago

Which of the following numbers represents 8/9 to the nearest percent?

schepotkina [342]

The number that represents 8/9 to the nearest percent is .89

5 0

3 years ago