Answer:
{ 0, -4}
Step-by-step explanation:
2x - 5•(-x -4) = 20
7x = 0
x = 0
y = -x-4
y = -(-0 , -4)
Step-by-step explanation:
sin(s+t) = sin(s)+cos(t) which results
(sin(s)×cos(t))/(cos(s)cos(t)) + (cos(s)×sin(t))/(cos(s)cos(t))
knowing that tan=sin/cos and that cos/cos=1 and sin/sin=1
resulting tan s ×1 + tan t × 1 = tan s + tan t
multiply the whole number with the denominator then add the numerator over the denominator then find the common multiple.
Perimeter is the distance around a shape. The way you find it is by adding the lengths of every side.
In this case, it is 3+4+5=12 cm