To know when will India´s population exceed China´s we need to know
when will they be equal. So:
We apply logarithm´s law to both sides:
So t=36.860231685
this means that India´s population will exceed China´s in year 2036
<span>16<span>x2</span>−4x−4x+1=4x(4x−1)−1(4x−1)=<span>(4x−1)</span>(4x−1)=<span><span>(4x−1)</span>2</span></span><span>
Length of each side=4x-1</span>
Answer:the present age of the father is 45 years
Step-by-step explanation:
Let x represent the present age of the father.
Let y represent the present age of the son.
Let z represent the age of the daughter.
A father is 3 times as old as his son. This means that
x = 3y
his daughter is 3 years younger than the son. It means that
z = y - 3
The sum of their ages 3 years ago was 63. This means that
x - 3 + y - 3 + z - 3 = 63
x + y + z - 9 = 63 - - - - - - - - - - 1
Substituting x = 3y and z = y - 3 into equation 1, it becomes
3y + y + y - 3 - 9 = 63
5y - 12 = 63
5y = 63 + 12 = 75
y = 75/5 = 15
x = 3y = 3 × 15
x = 45
z = y - 3 = 15 - 3
z = 12
Answer:
I don't know sorry can't help you
