Answer:40 square yards
Step-by-step explanation:
Given
Floor area A=10 square yards
Red tile costs per square yards
White tile costs per square yards
Total money spent= on tiles
Suppose red tiles cover an area of square yards
So, we can write
Red tiles cover an area of 40 square yards
Answer:
At the start of 2014, the population was growing at 8.34 million people per year.
At the start of 2015, the population was growing at 8.39 million people per year.
Step-by-step explanation:
To find how fast was the population growing at the start of 2014 and at the start of 2015 we need to take the derivative of the function with respect to t.
The derivative shows by how much the function (the population, in this case) is changing when the variable you're deriving with respect to (time) increases one unit (one year).
We know that the population, P(t), of China, in billions, can be approximated by
To find the derivative you need to:
To find the population growing at the start of 2014 we say t = 0
To find the population growing at the start of 2015 we say t = 1
To convert billion to million you multiple by 1000