Let the side length of the square be x, then A = x^2
but diagonal (z) = sqrt(2x^2)
z^2 = 2x^2
x^2 = 1/2 z^2
Thus, A = 1/2 z^2
dA/dz = 1/2 (2z) = z
The rate of change is z.
When z = 4, the rate is 4.
Step-by-step explanation:
x = number
3x - 15 = (x - 12)×-4 or (12-x)×-4
3x - 15 = -4x + 48 or -48 + 4x
7x = 63, x = 9 or
33 = x
His budget is $5000
you take 800 and divide it by 0.16
gives you 5000
Answer:
4x + 7
Step-by-step explanation:
7x+4-3x+3
First put the like terms together
7x+4-3x+3 = (7x - 3x) + (4 + 3)
= 4x + 7
Answer:
Therefore, amount of tax is $65.
Step-by-step explanation:
Amount of tax = Tax% of $1300
Amount of tax = 5% of $1300
= (5/100) of $1300
= (1/20) of $1300
= $130/2
= $65
