All categories

4 years ago

Simplify the expression

Mathematics

1 answer:

laila [671]4 years ago

6 0

-(x-3)=-x+3

First, distribute -1 to x and -3.

-x+3=-x+3

As you can see, both sides are equal. You can continue to simplify:

Add x to both sides to get rid of the variable.

3=3 or infinitely many solutions because x can equal any number and still be equal to the other side.

I hope this helps :)

You might be interested in

What is the inverse of the function f(x) = 1/9x+ 2?

hichkok12 [17]

Answer:

$f^{-1}(x) = 9x -18.$

Step-by-step explanation:

$y=f(x)=\dfrac 19 x +2\\\\\text{Replace x with y and then solve for y,}\\\\~~~~~~~x = \dfrac 19 y+2\\\\\implies 9x =y + 18~~~~~~~~~~~~~~~;[\text{Multiply both sides by 9}]\\ \\\implies y = 9x -18\\\\\implies f^{-1}(x) = 9x -18\\\\\text{Hence, the inverse of the given function is}~ f^{-1}(x) = 9x -18.$

4 0

2 years ago

3x+y=5 2x-2y=-2 solve by using process of elimination (find both x and y)

Bingel [31]

Answer:

The value of 'x' is 1 and 'y' is 2. So, the point is (1, 2).

Step-by-step explanation:

Given:

The given pair of linear equations are:

$3x+y=5\\2x-2y=-2$

In order to solve by elimination method, we have to eliminate any one variable using mathematical operations. Let us eliminate 'y'.

Multiplying the first equation by 2 and adding the result to the second equation. This gives,

$(3x+y)\times 2=5\times 2\\6x+2y=10\\2x-2y=-2\\+\\----------\\8x+0=8\\8x=8\\x=\frac{8}{8}=1$

Now, the value of 'y' can be calculated by plugging in 1 for 'x' in the first equation. This gives,

$3(1)+y=5\\3+y=5\\y=5-3\\y=2$

Therefore, the value of 'x' is 1 and 'y' is 2.

The solution is (1, 2).

6 0

4 years ago

An equation of a circle is given as (x + 6)² + (y − 7)² = 81. Find the center and radius of the circle. Show all work to receive

Salsk061 [2.6K]

Center is (-6,7) and radius is 9. A circle with a center at (h,k) and a radius of r has the equation (x-h)^2 + (y-k)^2=r^2 so h= -6 k= 7 r is 9 you just work back wards, what two numbers multiplied gives you 81? Well 9

4 0

3 years ago

Is n=3 a solution? -21 = <img src="https://tex.z-dn.net/?f=%5Cfrac%7B-63%7D%7Bn%7D" id="TexFormula1" title="\frac{-63

nadezda [96]

Yes. -63 / 3 = -21.

Please consider branliest! ^_^

7 0

3 years ago

Read 2 more answers

One customer is chosen at random for a prize giveaway. What is the probability that the customer is at least 20 but no older tha

Artemon [7]

30/100 is the probability

8 0

3 years ago