What is 20x-4=200
what is x?

x = 10.2

Step-by-step explanation:

To solve for x, we have to isolate it on one side of the = sign. The number on the other side is the value of x.

20x - 4 = 200

First, we can remove -4 from the equation. The inverse of -4 is +4, so we will add 4 to both sides. Adding 4 to -4 will neutralize it, making its value 0.

20x - 4 + 4 = 200 +4

Simplify this.

20x = 204

Now, we have 20 · x = 204. The inverse of multiplication is division. To the times 20, we will divide by 20 as well.

=

Simplify.

x = 10.2

We can check this by substituting the value of x, 10.2, for the variable.

20(10.2) - 4 = 200

204 - 4 = 200

200 = 200

Since the equation is true, the answer must be 10.2.

I hope this helps ^^ Good luck

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

0

step-by-step explanation:

equals the constant of proportionality.

solve for