The standard form is 4,216,090.
I don't know how many boys are in the classroom?
Answer:
If your money is earning a 5% interest rate annually, then it will take 14.4 years to completely double itself.
Step-by-step explanation:
An easy rule of thumb to remember is to take 72 and divide it by the intrest rate as if it was a whole number. For instance, if you were looking at an 8% interest rate, then it would take 9 years to double.
72/5 = 14.4
Hope this helps!
Let width be x m
perimeter = 2L + 2W
W = x and L = 4W - 7 = 4x - 7
so we have the equation
2(4x - 7) + 2x = 136
8x - 14 + 2x = 136
10x = 150
x = 15
So the width = 15m and the length = 4(15) -7 = 53 m. Answer