Answer:
Step-by-step explanation:
Subtract 5 from both sides.
Simplify.
Multiply both sides by 4.
Simplify.
Divide both sides by 3.
Simplify.
It's D , the digit after the number ur rounding
The answer is 5, 9 if its not than it is 3,4 that is the answer no problem
Answer:
14.44
Step-by-step explanation:
The formula says
A=p(1+r)^t
A 7800
P 3600
R 0.055
T ?
7800=3600(1+0.055)^t
7800/3600=(1.055)^t
Log(7800/3600)= t × log(1.055)
T=log(7800/3600)/log(1.055)
T= 14.44 years
Let,the time taken by larger pipe = x
By smaller pipe = x+5
It would be: 1/x + 1/(x+5) = 9/100
= x+5+x /(x)(x+5) = 9/100
= 2x+5 / x²+5x = 9/100
= 100(2x + 5) = 9(x² + 5x)
= 200x + 500 = 9x² + 45x
= 9x² - 155x - 500 = 0
= 9x² - 180x + 25x - 500 = 0
= 9x(x - 20) + 25(x - 20) = 0
= (9x + 25) (x - 20) = 0
= x = -25/9 or x = 20
Time can't be in negative so -25/9 is rejected.
Now,x + 5 = 20 + 5 = 25
In short, Your Larger pipe takes 20 minutes and smaller pipe takes 25 minutes
Hope this helps!
