x-6y=10 and 2x-2y=10 Multiply BOTH sides of the first eq by -2 to get
12y-2x=-20 then add to the second equation to get
10y = -10
y=-1
Sustitute y=-1 into one of the equations
x- 6(-1) = 10
x+6 =10
x=4
Just use the parentheses (( ))
To go from cm^2 to m^2 Divide by 10,000
An imaginary number involving 'i'
2i
would be the answer where 'i' is defined as sqrt(-1)
SOHCAHTOA IS the easy way to remember it !
=12
(z+6)/3 = 8 Multiply both sides of the quation by 3
z+6 = 8x3
z+6 = 24
z = 24-6=18
5 mi / 25 m/hr = 1/5 hr x 60 min/hr = 12 minutes
z + 6/3 = 8
z + 2 = 8
z= 8-2
z=6
