Substitution. This is because we put in x as 3 in the equation.
Hope this helps!
If we let V', A', and r' represent the rates of change of the volume, area, and radius of the sphere, we can differentiate equations for V and A in terms of r, then eliminate r' to get an equation for A' in terms of V'.
Then, for the given values, the surface area is increasing at the rate ...
... A' = (2/8)·25 ft²/s = 6.25 ft²/s
Answer:
4/9 for boys and 5/9 for girls
explanation:
there are 4 boys and 5 girls
so there are nine in total
if there are four boys and 9 in total then the fraction would be 4/9
and if there are 5 girls and 9 in total then the fraction would be 5/9
hope this helps and it plays Mark brainliest :D
Answer:
Step-by-step explanation:
we know that
I drive 715 miles in 13 hrs
using proportion
Find how many miles would I drive in 7 hrs
Let
x -----> the number of miles
For this case we have the following exponential function:
The first thing you should see for this case is the behavior of the function when you substitute values of x.
When replacing positive values (very large) the function tends to infinity because it is an exponential function.
When substituting negative values (very large) the function tends to zero because it is an exponential function.
Therefore, the range of the function is:
(0, ∞)
Equivalently:
y > 0
Answer:
all real numbers greater than 0