Sin (squareroot2/2) is the same as the angle 1/4×Pi which is the same as 45degrees
Each number is 1/3 of the number before it.
After 18 come 6, 2, 2/3, 2/9, 2/27, 2/81, ... etc.
1 mile is equal to 1.6 kilometers, so 8 miles (using a direct proportion) should be equal to 8 * 1.6 = 12.8 kilometers. The cyclist rides at 12.8 kilometers per hour. In four hours, the cyclist would have rode 12.8 * 4 = 48 + 3.2 = 51.2 kilometers.
Answer:
"Correct"
Triangles: Have three (3) sides
Quadriliaterals: QUAD being the key word means four (4)
"Incorrect"
Pentagons: Have five (5) sides
Hexagons: Have six (6) sides; key word being HEX
Heptagons: 7 sides (7)
Step-by-step explanation:
