There are 856,800 seconds of school left.
Explanation:
First, I multiplied 34 by 7 because there are 7 hours spent in school and 34 days
- 34x7= 238: this is the number of hours left in school
Then I multiplied 238 by 60 because there are 60 minutes in an hour
- 238x60= 14,280: this is the number of minutes left in school
Lastly, I multiplied 14,280 by 60 because there are 60 seconds in a minute
- 14,280x60= 856,800: this is the number of seconds left in school
Answer:
The number of people in the junior class = 180 people
Step-by-step explanation:
let number of people in junior class be x
By 7:00PM, 1/3 of the junior class had arrived at a school dance. This means x/3 juniors arrived by 7:00 PM
By 8:00PM, 30 more juniors had arrived, raising the attendance to 1/2 of the junior class. This means that 30 juniors plus 1/3 of the total number of juniors equal 1/2 of the total number of juniors
30 + x/3 = x/2
(90+x)/3 = x/2
Cross multiplying
2(90+x) = 3x
180 +2x = 3x
180 = 3x-2x
180= x
x = 180
There are multiple ways to do this.
The easiest is to just continuously subtract 7 from 65 the numbers of times needed.
But most math teachers will have you use the equation ar^n-1 where a= the first term (65), r=ratio (-7), and n=the term you need (second, fifth, and ninth).
So to solve you just plug your values in as so
AR^n-1
(65)(-7)^2-1(65)(-7)^5-1
(65)(-7)^9-1
<span>It was a phenomenon called thermal inversion, in which the change in temperature caused the air that was in the upper part of the atmosphere to fall, causing the death of 20 people and in turn health problems in another 7,000.</span>
