Answer:
9. C
10. C
11. C
Step-by-step explanation:
9.
simply, 
10.
the greatest divisor of 28 is 7, so:
28 + 7 = 35
11.
the greatest divisor of 15 is 5, so:
15 + 5 = 20
n = 20
the greatest divisor of 20 is 10, so:
20 + 10 = 30
Only three regular polygons tessellate<span>: equilateral triangles, squares, and </span>regular<span>hexagons. </span>No<span> other </span>regular polygon can tessellate<span> because of the angles of the corners of the </span>polygons<span>. ... For </span>regular polygons<span>, that means that the angle of the corners of the </span>polygon<span> has to divide 360 degrees</span>
Answer:
A = 2, B = 3 and C = 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Given
2x + 3y = 2 ( subtract 2x from both sides )
3y = - 2x + 2 ( divide all terms by 3 )
y = -
x +
← in slope- intercept form
with slope m = - 
Parallel lines have equal slopes, thus
y = -
x + c ← is the partial equation
To find c substitute (2, 0) into the partial equation
0 = -
+ c ⇒ c = 
y = -
x +
← in slope- intercept form
Multiply through by 3
3y = - 2x + 4 ( add 2x to both sides )
2x + 3y = 4 ← in standard form
with A = 2, B = 3 and C = 4
Answer:
3x+y=7
8x+12y=-9
Step-by-step explanation: