B.
Step-by-step explanation:
its the same as saying..
4x - 3y = 9
x + 3y = 6
add both equation together
5x = 15
i.e X = 3
substitute x= 3 in equation 2
3 + 3y = 6
3y = 3
divide both sides by 3
y = 1
dā7.07in
step-by-step explanation:
answer
d. 10
explanation
the distance from point y to wx is the height of the triangle.
using pythagoras theorem,
group similar terms to get,
this implies that,
take positive square root of both sides to get,