Question

1. s = 1/2(u+v)t

make u the subject and show the steps plz

2. p/2 = √t +r /9
make t the subject and show the steps plz

Answer 1

1. s= 1/2(u+v)t
s = (u+v)t/2
sx2 = (u+v)t
2s = (u+v)t
2s/t = u+v
2s/t - v = u
u = 2s/t - v
2. p/2 = √t + r/9
p/2-r/9 = √t
p^2/4 - pr/9 + r^2/81 = t
t = p^2/4 - pr/9 + r^2/81
hope this helps