Answer:
Answer:age of new student is 13.4 years
Step-by-step explanation:
SUM of ages all 40 students =average age times 40
=15*40=600
after leaving 18 years old student
SUM of ages of 39 students will be 600-18=582
after adding new student with age x
SUM of ages of 40 students will become 582+x
and the average would be (582+x)/40
which is given as 14.885
so we get equation
(582+x)/40=14.885
582+x=14.885*40=595.4
x=595.4-582
x= 13.4
age of new student is 13.4 years
Hope it will help you
Please mark as brainliest answer
Step-by-step explanation:
In this question we need to decrease 216 by 
or 37.5 %.
For this, firstly find 37.5 % of 216.
Now subtracting 81 from 216 to find decrease of 216 by 37.5 %.
So,
216-81 = 135
Hence, 135 is the decrease of 216 by 37.5 %.
Given:
2000 - 5,000 people
2010 - 5,600 people
(5600 - 5000) / 5000 = 600/5000 = 0.12
0.12 * 100% = 12%
The percent of change is 12%. It means that the number of people increase by 12% from the original number of 5,000 in year 2000.
I think it the answer is A.) 440.32
50,150 / 1,000 = 50.15
50.15 x 8.78 = 440.317 or 440.32
Answer:
x < - 1
Step-by-step explanation:
Given
- 4x > 4
Divide both sides by - 4, reversing the symbol as a result of dividing by a negative quantity.
x < - 1
