Answer:
–5(8x – 4y”) 5. a(4x” – 6y + 1) 6. c(2a + b + 3c) 7. x(3x” – 2x +5) 8. y(3x + 2y” + 4y) 9
Step-by-step explanation:
5x =61-6
5x= 55
X = 55/5
X = 11
Answer:
Here we have the function:
S(t) = 500 - 400*t^(-1)
Then the rate of change at the value t, will be:
S'(t) = dS(t)/dt
This differentiation will be:
S'(t) = -400/t^2
Then:
a) the rate of change at t = 1 is:
S'(1) = -400/1^2 = -400
The rate of change after one year is -400
b) t = 10
S'(10) = -400/10^2 = -400/100 = -4
The rate of change after 10 years is -4, it reduced as the years passed, as expected.
Answer:
see explanation
Step-by-step explanation:
Given that y varies inversely with x then the equation relating them is
y = ← k is the constant of variation
(A)
To find k use the given condition y = 2 when x = 10
k = yx = 2 × 10 = 20, thus
y = ← equation of variation
(B)
When x = 4, then
y = = 5
Answer:
2:3
Step-by-step explanation:
divide both 12 and 18 by gcm, which is 6