Answer:
C. 12
Step-by-step explanation:
It takes her 4 weeks to walk a mile a day for a week. For 3 miles a day, mulitply 4 by 3 to get 12 weeks.
Give me brainliest please
<span>Let's try to solve the equation:
1/x + 1/(x)² = 2
Kelly says that it is not possible because there are the variable x and x² in the denominators. Kelly is correct in that there is a value of x that makes the denominator zero. In this case, x = 0 makes the denominator of 1/x zero and also makes the denominator of 1/x² = 0.
</span>But, we want to look for values of x that will make the whole equation true, not the values of x that make the denominators zero. 1/x + 1/(x)² = 2
(x +1)/(x)² = 2
Multiply through by x² with the proviso that x is not 0.
Then,
(x + 1) = 2x²
At this point, we are looking for solutions to (x + 1) = 2x² which is related to but not identical to the original equation. So, we will have to check any answers we get to
(x + 1) = 2x² against the original problem: 1/x + 1/(x)² = 2
Answer:
r≈4.51yd
Step-by-step explanation:
The surface area of a sphere is given by the formula SA = 4r2, where r is the radius of the sphere. If the surface area of a sphere is 256 square yards, then the radius of the sphere is 4.51yd.
Formula: A=4πr^2
The vertical asymptote of f(x) is (A) x = 0, –9.
<h3>
What is a function?</h3>
- A function is an expression, rule, or law in mathematics that describes a relationship between one variable (the independent variable) and another variable (the dependent variable).
- Functions are common in mathematics and are required for the formulation of physical relationships in the sciences.
To find the vertical asymptote of f(x):
The vertical asymptotes of a function are the zeroes of the denominator of a rational function
The function is given as: ![f(x) = \frac{(x-9)}{(x^{3} -81x)}](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%5Cfrac%7B%28x-9%29%7D%7B%28x%5E%7B3%7D%20-81x%29%7D)
Set the denominator to 0:
Factor out x:
Express 81 as 9^2:
Express the difference between the two squares:
Split,
or
or
.
Solve for x:
Therefore, the vertical asymptote of f(x) is (A) x = 0, –9.
(See attachment for the graph of f(x))
Know more about functions here:
brainly.com/question/6561461
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The complete question is given below:
Consider the function f(x)=(x-9)/(x^3-81x) . find the vertical asymptote(s) of f(x).
A) x = 0, –9
B) x = –9
C) x = 0, 9
D) x = 9