Answer:
MOE= ± 0.098
Step-by-step explanation:
-The margin of error is calculated using the formula:
#Substitute to solve for MOE:
Hence, the margin of error is ± 0.098
Yunika downloaded three applications for $2.99 each to her cell phone. The remaining applications that Yunika purchased cost $1.
2 answers:
You might be interested in
Answer:
The vertex of the function is at (1,-25)
Step-by-step explanation:
I think your question missed key information, allow me to add in and hope it will fit the orginal one.
<em>Part of the graph of the function f(x) = (x + 4)(x-6) is shown below. </em>
<em>Which statements about the function are true? Select two </em>
<em>options. </em>
<em>The vertex of the function is at (1,-25). </em>
<em>The vertex of the function is at (1,-24). </em>
<em>The graph is increasing only on the interval -4< x < 6. </em>
<em>The graph is positive only on one interval, where x <-4. </em>
<em>The graph is negative on the entire interval </em>
My answer:
Given the factored form of the function:
f(x) = (x + 4)(x-6)
<=> f(x) =
We will convert to vertex form
<=> f(x) = () - 25
<=> f(x) =
=> the vertex of the function is: (1,-25)
We choose: a. The vertex of the function is at (1,-25)
Let analyse other possible answers:
<u>c. The graph is increasing only on the interval -4< x < 6.</u>
Because the parameter a =1 so the graph open up all over its domain and the vertex is the lowest point.
So the graph is increasing in the domain (1, +∞)
=> C is wrong
<u>d. The graph is positive only on one interval, where x <-4</u>
Wrong, The graph is positive only on one interval, where x > 6
<u>e. The graph is negative on the entire interval</u>
Wrong, The graph is negative only on one interval, where -4< x < 6.
Answer:
The length is 9.
The width is 7.
Step-by-step explanation:
A rectangle has two dimensions.
The width, which is the distance between the points who have the same value of y.
The length, which is the distance between the points who have the same value of x.
Distance between 2 points:
Points (a,b) and (c,d).
Same value of x:
(-1,1), (-1-8) or (6,1), (6,-8)
The distance for both of them is the same, can calculate for only one.
The length is 9.
Same value of y:
(-1,1), (6,1) or (6,-8), (-1,-8)
The width is 7.