X is the short piece
(3•x-1)+x=31
4x=31+1
X=32/4=8
Short piece is 8
Long piece is 3•8-1=23
Check 8+23=31 ✔️
The answer is E.
First you need to find the rate. You must divide 1.8 by 100
1.8/100 = .018
Then add 1.
.018 + 1 = 1.018
Then times the starting amount with 1.018. The starting amount 750
750(1.018) = <span>763.5.
</span>As you can see, in option E that is the 2nd number.
Now we must find the next number.
You will do 750(1.018)^x
x represents the time.
763.5 was the first month.
750(1.018)^2 is the 2nd month.
750(1.018)^2 = <span>777.244 which is the 3rd number in option E</span>
The value of the differential with respect to x is -xy/x²+ay
<h3>Implicit differentiation</h3>
Given the following function
x²y +ay² = b
We are to differentiate implicitly with respect to x
x²dy/dx + 2xy + 2aydy/dx = 0
(2x²+2ay)dy/dx = -2xy
dy/dx = -xy/x²+ay
Hence the value of the differential with respect to x is -xy/x²+ay
Learn more on implicit differentiation here: brainly.com/question/25081524
#SPJ1
