Answer:
x ≤ 13 2/5 and y ≥ 6 2/3
Step-by-step explanation:
system of equations would be:
x + y ≤ 20
5x + 8y ≥ 120
if you solve this system you get the answer above
We want a in terms of b and c: <span>3a+4b=c
Isolate 3a on the left side: 3a = c - 4b
Divide all terms by 3:
a = c/3 - 4b/3 (answer)</span>
Answer:
1/1024
Step-by-step explanation:
It can also be written as 1/4^5 and you just have to simplify it.
380 divide by 20
it will take her 19 hours to stamp 380 letters