Answer:
Step-by-step explanation:
A) The diagonals of a parallelogram are perpendicular
B) The diagonals of a kite bisect each other
- Sometimes (one of the diagonals is bisected)
C) A polygon is a quadrilateral
- Sometimes (when it has 4 sides)
D) Thé diagonals of a rectangle are equal
- Always (definition of rectangle)
E) Thé opposite angles of a parallelogram are equal
- Always (definition of parallelogram)
F) A rhombus is a rectangle
- Never (when all interior angles are equal it becomes a square)
7 % of cost price is 2.80 , What about 1%?
7 = 2.80
1 = x (where x is the price value of 1% in dollars)
We simplify the above equation, so:
7 × x = 2.8 × 1 → 7x = 2.8 → x = 2.8 / 7 → x = 0.4 dollars
We know that 100% represents the whole price,
so if 1% is 0.4 dollars, then 100% will be 0.4 × 100 = 40 dollars
Therefore the store charged $40 dollars for the helmet before tax
(0, 1) and (1, 0) are the intersection points. The first equation is a circle and the second is a linear function.
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