The statement "<span>The rate of change of y with respect to x is inversely proportional to y^4" can be written mathematically as dy/dx = k/y^4
To solve the differential equation, we use variable saparable method.
y^4 dy = kdx
Integrating both sides gives,
y^5 / 5 = kx + A
y^5 = 5kx + 5A = Bx + C; where B = 5k and C = 5A
![y= \sqrt[5]{Bx+C}](https://tex.z-dn.net/?f=y%3D%20%5Csqrt%5B5%5D%7BBx%2BC%7D%20)
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Given f(n+1) =-2f(n)
here f(n) =f(1) = -1.5
f(n+1) =f(2) = -2 * -1.5 = 3
Answer:
54
Step-by-step explanation:
Estimate=Population size × Sample proportion
population size = 120
sample proportion = (9)/(9+6+5) = 9/20 (check on Cymath as a resource)
estimate = 120 x 9/20 = 54
Answer:
The volume of 250 magnets is 625cm³
Step-by-step explanation:
We know that the formula to calculate the volume of a sphere is
v = 3/4 * π * r³
π = 3.14
r = 1.02cm
we replace the values and calculate the volume of a sphere
v = 3/4 * 3.14 * (1.02cm)³
v = 3/4 * 3.14 * 1.061208cm³
v = 2.49914484cm³
to calculate the volume of 250 spheres we simply multiply by 250
250 * 2.49914484cm³ = 624.78621
if we round to the nearest cubic cm
624.78621cm³ = 625cm³
<span>The correct answer is B. Grants are sums of money given to students that they do not need to pay back. A is incorrect because it's not always federal money (the government isn't always the one giving out grants). C is incorrect because the money isn't being borrowed. D is incorrect because "tuition" is the price of attending classes.</span>