Answer:
(2dp)
Step-by-step explanation:
Expand brackets:
simplify:
Collect terms:

Rearrange for k:

Answer:
1/60
Step-by-step explanation:
convert 2 hours into minutes = 120 minutes
simplify 20/120
1/60
Answer:
23
Step-by-step explanation:
First subtract 7 and 4.
7-4=3
6-3=3
________
7+3+6+3+4
7+3=10
10+6=16
16+3=19
19+4=23
(Ignore the 3 inside the shape)
Answer is D
Explain 729:33(-2)
I am taking this quiz but I'm pretty sure its....c