Answer:
![[km^2]](https://tex.z-dn.net/?f=%5Bkm%5E2%5D)
Step-by-step explanation:
In this problem, the initial area of the forest at time t = 0 is
After every year, the area of the forest decreases by 9.8%: this means that the area of the forest every year is (100%-9.8%=90.2%) of the area of the previous year.
So for instance, after 1 year, the area is
After 2 years,
And so on. So, after t years, the area of the forest will be
And by substituting the value of A0, we can find an explicit expression:
The probability of selecting one student who is both from math and science is 1/10
There are the total number of student = 300
Out of which,the number of students who are only in Maths = 120
The number of students who are only in Science = 50 and the students who are not from any subject = 100
<h3>What is the formula for the
total students?</h3>
Total no of students=science student+math students +none
Therefore,the number of student who are from both math and science = Total student - Math student (only) - science student (only) - None
= 300 - 120 - 50 - 100
= 30
That is, there are 30 students who are both from science and math,
Thus, the probability of selecting one student who is both from math and science = 30/300 = 1/10
To learn more about the probability visit:
brainly.com/question/24756209
B and D. You are welcome.
Answer:
9n+18(2n-6)+13
Step-by-step explanation:
First, use distributive property to eliminate the parenthesis:
9n + 18(2n -6) + 13
9n + 36n - 108 + 13
Next, combine like terms:
9n + 36n - 108 + 13
45n - 108 + 13
45n + 121
Hope this helps!!
Alan~
Answer:
3000 miles
Step-by-step explanation:
Given the car travels
900 miles = 1.5 hrs
With the same speed,How many miles will it travel in 5 hours.
Let the miles travelled in 5 hours be A
Therefore
900 miles = 1.5hrs
A miles = 5 hours
Cross multiply
A x 1.5 = 900 x 5
A x 1.5 = 4500
Divide both sides by 1.5
A x 1.5/1.5 = 4500/1.5
A = 3000
A = 3000 miles
The car will travel 3000 miles in 5 hours at the same speed
