Answer:
a
Step-by-step explanation:
The area (A) of a triangle is calculated as
A =
bh ( b is the base and h the perpendicular height )
Here b = 9 and h = 12 , then
A =
× 9 × 12 =
× 108 = 54 cm²
No this statement is not true.
Here are some examples:


Therefore,
It is proved that not every number which ends with 4 is halved to get a number which ends with 2.
Answer:

Step-by-step explanation:
The multiplicative inverse of a number n is
, then
inverse of
is
= 
Answer:
The equation is;
y = -3/4x + 12
Step-by-step explanation:
The general form for the equation of a straight line is;
y = mx + b
where m is the slope and b is the y-intercept
With respect to this question;
4/3 is the slope and 1 is the intercept
If two lines are perpendicular, then the product of their slopes is -1
Mathematically;
4/3 * m2 = -1
m2 = -3/4
So to find the equation of this second line, we use the point slope form
This is;
y-y1 = m(x-x1)
y-4 = -3/4(x + 8)
y- 4 = -3/4x + 8
y = -3/4x + 12