Answer:
u=5.23
Step-by-step explanation:

(3x-12)+12(xy-10), x=4, y=6
(3(4)-12)+12((4)(6)-10)
(12-12)+12(24-10)
0+12(14)
12*14=168
Answer:
=1.99 sec
Step-by-step explanation:
t=k√d
k= constant
3=k√34.1
3=5.839k
k=0.5137
t=0.5137√15
t=1.99 sec
Remember PEMDAS, you have to simplify the exponent first.
Answer:
-(x+14)/2
Step-by-step explanation:
There is a website that automatically calculates this for you.
Check it out, its called symbolab