Answer: 50% increase
Step-by-step explanation:
Think of 20 as 100%
Half of 20 is 10 which is 50% in this scenario.
30-20=10
This means that the price of the item increased by 50% or 10.
12 1/2 = 12.5
2.5mm = 2.5 cm
So the answer would be 15 cm
Answer:
3/4
Step-by-step explanation:
Give brainliest if it helped...(:
Answer:
89/100
Step-by-step explanation:
The average weighted by the number of students is ...
(90(0.90) +10(0.80))/100 = (81 +8)/100 = 89/100
Answer:
mean - 12.5
SD - 12.0
Step-by-step explanation: