Answer:
?
Step-by-step explanation:
Answer:
<u>x = 20°</u>
Step-by-step explanation:
(4x-10)+x=90
4x-10+x=90
4x+x-10=90
5x-10=90
5x=100
x=20
we need the graph/ lines,
but just remember
wherever 2 lines intersect, that is a solution
if they are paralell, no solutions
if they cross, 1 solution
if they are the same line/ the lines are on top of each other exactly, infinite solutions
Step-by-step explanation:
the following things are clear : opposite sides are of equal length, the sum of all angles in a square, rectangle or general parallelogram is 360 degrees, and opposite angles are equal.
so,
y² + 7 = 32
y² = 25
y = 5
2y² = k
2×5² = k
50 = k
the opposite angle of 150 is also 150 degrees.
the opposite angle of x is also x.
so, we have as sum of angles
360 = 150 + 150 + x + x = 300 + 2x
60 = 2x
x = 30 degrees
Answer:
Complete expression will be ![(x-y)^2-9](https://tex.z-dn.net/?f=%28x-y%29%5E2-9)
Step-by-step explanation:
We have given expression ![[(x-y)-3][(x-y)+3]=(....)^2-9](https://tex.z-dn.net/?f=%5B%28x-y%29-3%5D%5B%28x-y%29%2B3%5D%3D%28....%29%5E2-9)
We have to complete the expression
We know the algebraic equation ![(a+b)(a-b)=a^2-b^2](https://tex.z-dn.net/?f=%28a%2Bb%29%28a-b%29%3Da%5E2-b%5E2)
So
can be written as ![(x-y)^2-9](https://tex.z-dn.net/?f=%28x-y%29%5E2-9)
So in place of blank space there will be ![(x-y)^2](https://tex.z-dn.net/?f=%28x-y%29%5E2)
And the complete expression will be ![(x-y)^2-9](https://tex.z-dn.net/?f=%28x-y%29%5E2-9)