Answer:
56
Step-by-step explanation:
Complete question:
Z varies jointly with x and y , x=2 and y=2, z=7. Find z when x=4 and y=8 using joint variation . (I need the problem worked out step by step)
If z varies jointly with x, and y, this is expressed as;
z = kxy
If z=7 when x= 2, y= 2
7 = k(2)(2)
7 = 4k
k = 7/4
To get z when x= 4 and y = 8
z = kxy
z =7/4 (4)(8)
z = 7*8
z = 56
Hence the value of z is 56
Answer: 
Step-by-step explanation:
Given: Length of sandwich = 
Total people = 14
If everyone gets a same sized piece , then length of each piece should be
Hence, length of each piece =
Answer:
4:15 p.m.
Step-by-step explanation:
There's something missing in this:
Once it started, the movie lasted for 1 hour and minutes. What time was it when the movie ended?
What is the minutes because thats missing.
Also can I get Brainliest please
