Answer:
11.5 kg
Step-by-step explanation:
Is means equals and of means multiply
50% * 23 = W
Change to decimal form
.50 * 23 =W
11.5 = W
Y=1/2x+4 this is the way I was taught let me know if It makes since to you
Answer:
c and a i think
Step-by-step explanation:
Answer:
They all are solutions!
Step-by-step explanation:

An easy way to check this is just to substitute each pair of values into both equations:
(a) 
(b)

(c)

Have a nice day!