Answer:
Fist off composite numbers are whole numbers. And they have at least 3 factors.
Step-by-step explanation:
For example the number 6.
1 X 6= 6
2 X 3= 6
3 X 2= 6
6 X 1=6
It has 4 factors. The factors are 1,2,3,6.
Hope this helped :)
step-by-step explanation:
since it tells you the equation 'y = 20x' and y is the number of gallons where as x is minutes
the independent variable = number of gallons
the dependent variable = minutes
and the number(s) to fill in the table
x , y
( 0, 0 )
( 1, 20 )
( 2, 40 )
( 3, 60 )
( 4, 80 )
and the relationship between x and y is linear because you can clearly see the graph having especially a straight line that is not interfering with itself
hope this helps you! :)
Answer:
2.7 PM
Step-by-step explanation:
Since, the rate of spread is proportional to the product of fraction y of people who have heard the rumour and the fraction who have not heard,
Integrating both sides,
If t = 0, ( at 8 AM ), y =
Now, at noon, i.e t = 4, y =
If
Using graphing calculator,
t ≈ 6.722,
Hence, after 6.722 hours since 8 AM, i.e. on 2.7 PM ( approx ) the 90% of the population have heard the rumour.
C = 25 + 7h...c = 81
81 = 25 + 7h
81 - 25 = 7h
56 = 7h
56/7 = h
8 = h......so at 8 hrs, it will cost $ 81