calculate area of wall
20 x 1.5 = 30 square meters
now calculate area of 1 block
12 x 18 =216 square centimeters
convert cm to meters 1 cm^2 = 0.0001m^2
so 216 x 0.0001 = 0.0216 sq meter for 1 block
divide area of wall by area of block
30/0.0216 = 1388.88 so 1389 blocks are required.
Answer:
D, x = 3
Step-by-step explanation:
to know if a line is parallel, we need to know what kind of line x = 6 is
we can use the mnemonic VUX/HOY to determine the slope, the type of line, and which axis it corresponds to. VUX/HOY stands for:
Vertical line
Undefined slope
X axis
Horizontal line
0 is the slope
Y axis
according to this, the equation x = 6 is a vertical line
now we can start eliminating answer choices
A. a line containing the point (6,2)
the point lies on the line x = 6, as the x-coordinate in the ordered pair is 6. this is not parallel to the line
B. y = 6
this intersects x = 6 and is not parallel
C. y = 4
this intersects x = 6 as well and is not parallel
D. x = 3
this leaves us with x = 3, which is a vertical line as seen by the equation and therefore x = 3 is our answer
The answer is B) y ≤ x + 1 and y > x - 3 . The graph shows TWO types of lines, a less than or equal to, and a greater than. B is the only answer with both of these lines.
I think that it is B and C
