Answer:
C) Square, Rhombus and Kite
Step-by-step explanation:
These are due to the fact that the square has all its equal sides and is 4 sides, so its diagonals will always be perpendicular.
The rhombus also has all its equal sides and are 4 sides so its diagonals will always be perpendicular.
The kite does not have its four equal sides, but its vertices are constructed from its diagonals that cross perpendicularly, so it also meets the perpendicular diagonals
Step-by-step explanation:
therefore, 9 students haven't given their speech
Answer:
9x^2+42x+45
Step-by-step explanation:
Foil (3x+5)(3x+9) by taking the numbers in the left parenthesis and multiplying it by the numbers on the right. So 3x(3x), then 3x(9), then 5(3x) and 5(9). Now we have 9x^2 + 27x+15x+45, simplify to get 9x^2+42x+45.
Answer:
6.5
Step-by-step explanation:
The midpoint of the line is (-1,7). If you draw a line between that and (1.6), you’ll pass through the y-axis at 6.5.
