Use the "mixed partials" check to see if the following differential equation is exact. if it is exact find a function f(x, y) whose differential, df(x, y) gives the differential equation. that is, level curves f(x, y) = c are solutions to the differential equation: dy _ -2x4 – 4y dx = 4x + 4y4 first rewrite as m(x, y) dx + n(x, y) dy = 0 where m(x, y) = and n(x, y) = if the equation is not exact, enter not exact, otherwise enter in f(x, y) as the solution of the differential equation here = c.

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

8 2/3 is the answer

step-by-step explanation: just use a calculator

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500