Answer:
lol
Step-by-step explanation:
Given that the initial point of the vector is (1,-2) and the termination point of the vector is (0,0).
So, the tail of the vector is at point (1,-2) and the head of the vector is at (0,0). The vector,
, has been shown in the figure.
The magnitude of the vector:

The direction of a vector is the angle made by a vector with the positive direction of the x-axis.
From the figure, 


Hence, the required vector having a magnitude
and direction
has been shown in the figure.
If (x+4)(x+9) then either x+4 = 0 or x+9 = 0
This is by the zero product property
Answer:
x=4
Step-by-step explanation:
Answer:the number of black tiles that Todd used is 27
Step-by-step explanation:
Let x represent the number of black tiles that Todd used.
Todd has 21 white tiles and some black tiles to make a mosaic. Each tile has an area of 3 square. It means that the total area of the white tiles is 21 × 3 = 63 cm^2
The total area of the white tiles is x × 3 = 3x cm^2
The mosaic has a total area of 144 Square centimeters. It means that
3x + 63 = 144
3x = 144 - 63 = 81
x = 81/3 = 27