Answer:
X=5
Y=3
(5,3)
Step-by-step explanation:
Solve using substitution
3/25 or 0.12 is the answer
Answer:
Step-by-step explanation: 5 - 1 = 4
Answer:
85.7
Step-by-step explanation:
Given that two sections of a class took the same quiz. Section A had 15 students who had a mean score of 80, and Section B had 20 students who had a mean score of 90.
Section A total score = 15*80=1200
Section B total score 20*90 = 1800
Overall total score=3000
Overall total students = 15+20 =35
Hence overall mean =
rounding off to one decimal place
overall mean = 85.7
Answer: a
Step-by-step explanation: