What is the solution to the system of equations? x+y = 2 x -y =4 ,

So with this system of equations, I will be using the elimination method. With the two equations, add them together and you will get:

Since the y-variable has been eliminated, we can solve for x. With this, divide both sides by 2:

Now that we know the value of x, substitute it into either equation to solve for y:

In (x,y) form, your answer is (3,-1).

answer for #1 is c

answer for #2 is d

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d) by the cross product property, ab^2 = bc multiplied by ad

step-by-step explanation:

we are given

in the given triangle abc

angle a is 90° and segment ad is perpendicular to segment bc

we can see that

triangle(abc) and triangle(abd) are similar because they have common side and same angle (90 degree)

so, triangles(abc) and abd are similar

since, they are similar

so, the ratio of their sides must be equal

we get

now, we can cross multiply

and we get

so, this could be step to prove it