Answer:

Step-by-step explanation:
A quadratic equation is a equation that takes the form: 
Ex. Using our definition of quadratic equations,
,
We can set a = 2, b = 1, c = 6:


Which can then be solved (if you are trying to solve it) as:


Answer:
-8
Step-by-step explanation:
Given that x and y are two variables. they are related by the function
y =8-2x
Since x and y are related, given one value we can find the other using this equation.
In our question, given that x =8
Substitute x value in the equation
y = 8-2x
y =8-2(8) = -8
Hence answer is -8:
Verify: We verify by putting -8 for y and check whether x =8
-8=8-2x
Or 2x = 16
x =8
Verified
Answer:
c
Step-by-step explanation:
Answer with explanation:
→A polygon is a simple closed curve. So , a closed curve occupies area.
⇒When we use the word area, it describes two dimensional closed geometrical object.It is not necessary that ,the shape is polygon only, it should be a simple closed curve.For,example, Circle, Combination of Part of curve and line segments, but it should be a closed curve.
⇒There are some open curves , which occupies area ,but the curve is not closed from both sides, so we can't predict it's area precisely.Therefore , open curves does not come into consideration when we use the word area.
Therefore, Here "Sometimes" word is used.
So, Yes ,Selecting either a polygon or an area will sometimes reveal the area
→True Statement
One side of the square is 15 cause 15 times 15=225