Mathematics, 11.03.2021 17:30 cxttiemsp021
Question 1 (6 points)
Select the interval(s) where the function f(x)=2x3โ3x2โ12x+20 is only increasing.
Question 1 options:
โโ < x < โ
0 < x < โ
โ2.5 < x <โ
โ1 < x < 2
2 < x < โ
โโ < x < โ1
Question 2 (6 points)
Select the interval(s) where the function f(x)=x3+4x2+1 is only increasing.
Question 2 options:
โ2.7 < x< 1.8
0 < x < 4
โโ
โโ< x < 0
0 < x < โ
1.8 < x < โ
Question 3 (3 points)
Identify the interval where the graph is only decreasing.
Question 3 options:
(โ2, 1)
(โ3, 2)
(โ3, โ1)
(โ4, 2)
Question 4 (3 points)
What is the apparent solution set to the system of equations:
Question 4 options:
{(1.5, 2.5), (3, 2)}
{(โ3, 2), (1.5, โ3)}
{(โ2, โ3), (2.5, โ1.5)}
{(โ2.5, 1.5), (2, โ3)}
Question 5 (3 points)
Saved
What are the apparent solutions to the system of equations:
Question 5 options:
{(โ4, 3), (โ1, 0)}
{(โ5, 0), (โ313, 0), (โ1, 0)}
{(โ3, 4), (โ2, โ2)}
{(0, โ5), (0, 5)}
Question 6 (3 points)
Saved
Given f(x)=3xโ4 and g(x)=x2โ3, find (g โ f)(x).
Question 6 options:
9x2+13
3x2โ13
9x2โ24x+19
9x2โ24x+13
Question 7 (3 points)
What are the x-coordinates to the solutions of the system of equations: {x+y+10=0x2+yโ2=0
Question 7 options:
x = -3, -7
x = 4, 14
x = -3, 4
x = -4, 3
Question 8 (6 points)
What are the y-coordinates for the solution to the system of equations: {yโx2+9xโ6=0yโx+3=0
Make sure to select all the correct answers.
Question 8 options:
9
1
8
6
-3
-9
-2
2
Question 9 (3 points)
Question 9 options:
Given f(x)=2x and g(x)=x2+3, find (g โ f)(โ3).
Type final answer only in the blank.
Question 10 (3 points)
Question 10 options:
Given f(x)=x2+3x and g(x)=2x2, find (f โ g)(โ1).
Type answer only in the box.
Answers: 3
Mathematics, 21.06.2019 20:00
Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10
Answers: 2
Mathematics, 21.06.2019 20:30
For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.
Answers: 1
Mathematics, 21.06.2019 21:30
Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?
Answers: 3
Mathematics, 21.06.2019 23:00
Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference รฎล(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference รฎล(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference รฎล(x - x)2 by more than data sets (ii) and (iii). none of the above
Answers: 2
Question 1 (6 points)
Select the interval(s) where the function f(x)=2x3โ3x2โ12x+20 is only increas...
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