Answer:
Step-by-step explanation:
y varies directly as the cube of x:
this means y is proportional to the cube of x
y α x^3
or
y = cx^3
Where 'c' is some constant.
plug in the given x and y and solve for c, then you can plug in c and the new x and solve for y.
Give it a shot and come back with a question and your attempt at solving this problem if you're still confused.
Answer:
The number is 9.
Step-by-step explanation:
Let the unknown number be <em>x</em>:
<span>C. 17.83 miles per hour
Instead of using D=R*T use D/T=R
D=41
T=2.3
41/2.3=17.83</span>
1+1/x^2 when multiplied by x^2 we get: (x^2+1)/x^2.
Letter B is a function because all the x values are different. Letter C is a function also because even though the number 4 repeats, it is in the y value and not the x so as long as the x value’s are different, it is a function. Letter A is not a function because there are 2 of the same x values.