Factorize
x2 - 4=
(x-2)(x+2)
2x(3x+1)+5(2x+3)
6x2+12x+15
What are the formulas that we use to calculate the perimeter of a circle and the area of the disc?
Perimeter: 2 x Pi x Radius or Pi x Diameter
Area: Pi x Radius2
I am a quadrilateral with 2 equal sides and one pair of parallel sides. Who am I?
Isosceles Trapezoid
214x10-4
2.14x10-2
4x2 +12x+9
(2x+3)2
(2x+3)(3x+1)-(3x-1)(2x+1)=
6x+4
What is the perimeter of a circle whose diameter is 10cm?
314cm
I am parallelogram ABCD with angle ABC=400. what is the measure of angle BCD?
1400
7x103x2
1.4x104
(x+3)(2x+5)-(x+3)2 =
(x+3)(x+2)
(3x+4)2-(3x5)(3x+5)=
24x+41
What is the area of a disc whose radius is 10cm?
78.5cm2
True or False. Justify.
A rectangle is a square but a square is not a rectangle.
False, A square is a rectangle since it is a parallelogram with 4 right angles and equal diagonals. however, a rectangle is not a square since it doesn't have 4 equal sides and doesn't have perpendicular diagonals.
21x5x103
1.05x105
4(x+3)2 - 16(3x-1)2 =
4(7x+1)(-7x+5)
(x-4(3x-1)-5(x+1)-7x(x+1)
-4x2-25x-1
What is the radius of a circle whose perimeter is 43.96m?
7meters
True or False? Justify.
A trapezoid is a parallelogram with one pair of parallel sides.
False. A trapezoid is a quadrilateral with exactly one pair of parallel sides. To be a parallelogram it must have two pars of parallel sides.
0.00014x104
1.4
(2x+5)(3x-1)-(3x-1)2+(3-6x)=
(3x-1)(-x+3)
4(2x+3)(5x+1)-3(4x-1)2-5(2x-1)(2x+1)
-28x2+92x+14
what is the diameter of a circle whose area is 200.96m2 ?
Radius = 8meters
Diameter = 16meters
What are the properties of a rhombus?
A Rhombus is a parallelogram that has consecutive equal sides. It has diagonals that are perpendicular bisectors to each other. Its diagonals are angular bisectors of the angles. Diagonals are the axis of symmetry.
0.0000002x0.3
6x10-8