Answer:
A net has a triangle at the center. 3 triangles are on the sides.
Step-by-step explanation:
- A net is a pattern that is followed to form a model of a figure.
- The pattern gets folded up and a solid figure of made out of it.
- A triangular pyramid has four faces that are triangular.
- There are a total of four triangles that are folded to form a net of a triangular pyramid.
- One triangle is at the center and three triangles are placed on the sides.
It is called a constant.
Remember a "variable" means that the value of that term can change depending on the value of the "x" or "y". Since (in this case), -6 does not have a variable attached, it will not change, it will remain CONSTANT.
7) Area trapezoid = (B+b).H/2, but the Median is equal to (B+b)./ 2
84 =12 . H ==> H = 84/12 ==> H = 7
11) Area Equilateral triangle inscribe in a cercle with Radius R = 2√3
Area = (B.. Altitude) / 2. Calculate H, the altitude. The altitude in an equilateral triangle bisects the opposite side. Apply Pythagoras
(2√3)² = (√3)² + H² ==> 12 = 3 + H² ==> H² = 9 & H = 3
Hence Are = (2√3 x 3) /2 ==> 3√3 unit² or 5.2 unit²
12) Area of regular hexagone with perimeter =12
regular hexagone is formed with 6 equilateral triangles with
each side =12/6 = 2 units
Let's calculate the area of 1 equilateral triangle. Follow the same logic as in problem 11 & you will find that Altitude = √3, Area =(2.√3)/2 =√3 =1.73 Unit³
13) a) Circumference of a circle : 2πR==> 2π(30) =60π = 188.4
b) Area of a circle =πR³ ==> π(30)² = 900π = 2,826 unit²
Answer:
32
Step-by-step explanation:
Use the given functions to set up and simplify f
(−
2
)
.
First,
Write the problem as a mathematical expression
Then,
Replace the variable x with −
2 in the expression.
