Answer:
36x² - 9y²
Step-by-step explanation:
We see that the given expression (6x + 3y)(6x - 3y) looks just like the expression (a + b)(a - b). When multiplied out, this is a difference of squares identity that I highly recommend you memorise:
(a + b)(a - b) = a² - b²
Here, a = 6x and b = 3y, so plug these in:
(6x + 3y)(6x - 3y) = (6x)² - (3y)² = 36x² - 9y²
t = 5.3 years
(about 5 years 4 months)
Equation:
t = (1/r)(A/P - 1)
Calculation:
First, converting R percent to r a decimal
r = R/100 = 7.2%/100 = 0.072 per year,
then, solving our equation
t = (1/0.072)((4835.6/3500) - 1) = 5.3
t = 5.3 years
. Given situation:
=> Maximilian had 4/5 of bag of trail mix.
He divided this trail mix to his 5 friends.
Find the fraction that each of his friend will have if he equally divided this to them.
=> Convert to decimal first
4/5 = 0.8 the dividen
5 = the divisor
Let’s start dividing:
=> 0.8 / 5
=> 0.16, now we have the decimal value, let’s convert this to fraction.
=> 0.16 = 16/100 let’s simplify
=> 4/25