Answer:1.2r
Step-by-step explanation:
Answer:
f-3+6
because f=9
Step-by-step explanation:
1. Total age of people in the room
40 x 6 = 240
Total age after a person age 30 left the room
240 - 30 = 210
since there are 5 people left in the room,
210 ÷ 5 = 42
42 is the new mean.
2. Not possible
Answer:
4.2%
Step-by-step explanation:
percent error = (estimated value - actual value)/(actual value) × 100%
Here, the estimated value is 250 g, and the actual value is 250 g.
percent error = (estimated value - actual value)/(actual value) × 100%
percent error = (250 g - 240 g)/(240 g) × 100%
percent error = 10/240 × 100%
percent error = 0.041666... × 100%
percent error = 4.2%