Calculate the value of x
2 answers:
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Answer:
Step-by-step explanation:
We have the square and four equilateral triangles.
The formula of an area of a squre:
a - length of side
The formula of an area of an equilateral triangle:
a - length of side
Clculate the areas:
SQURE:
TRIANGLE:
The SURFACE AREA of a square pyramid:
Put x = 5:
Answer:
The correct option is 3.
Step-by-step explanation:
The given equation is
It can be written as
Taking out the common factor form the parenthesis.
If an expression is defined as then we add
to make it perfect square.
In the above equation b=6.
Add and subtract 3^2 in the parenthesis.
.... (1)
Add 32 on both sides.
The vertex from of a parabola is
.... (2)
If a>0, then k is minimum value at x=h.
From (1) and (2) in is clear that a=2, h=-3 and k=-32. It means the minimum value is -32 at x=-3.
The equation reveals the minimum value for the given equation.
Therefore the correct option is 3.