Answer:
a) 1790 b) 1.79
Step-by-step explanation:
a) you just add to get the perimiter 2(900) + 2(400) to get 1790
b) 1000 meters makes a kilometer so we divide by 1000 and get 1.79 for the kilometers
You could start by noticing

so you don't have to worry about the decimal point anymore. Then carry out the division as usual.
172*24 = 4128
so we have
4172 = 4128 + 44 = 172*24 + 44

Answer:
should be 48
Step-by-step explanation:
Answer:
A. f(x) = -0.5(x+3) (x-5)