Mathematics, 18.03.2021 03:10 DragonLovely
PLEASE HELP URGENT Use elimination to solve the system of equations. Work must be submitted to earn credit.
4x + 3y = 7
x + 2y = -2
(1 Point)
(1, -4)
(4, -3)
(-3, 4)
(0, -1)
2Use elimination to solve the system of equations. Work must be submitted to earn full credit.
-10x - 3y = -18
-7x - 8y = 11
(1 Point)
(7, -10)
(3, -4)
(-4, 3)
(2, -1)
3If a system of equations has "infinite" solutions, what does the graph look like? No work is needed.
(1 Point)
the same line
the infinity symbol
lines intersecting at one point
parallel lines
4Is (3, 0) a solution to the following system of equations? Work must be submitted to earn full credit.
2x + 3y = 6
-4x + 6y = -12
(1 Point)
no
yes
5Is (4, -3) a solution to the following system of equations? Work must be submitted to earn full credit.
y = -2x + 5
y = x - 4
(1 Point)
yes
no
6Explain why there are "infinite" solutions to the system of equations. No work is necessary, but you can do work.
2x - y = 4
6x - 3y = 12
(1 Point)
They have the same slope and same y-intercept; therefore, they're the same line.
The have the same slope, but different y-intercepts; therefore, they're parallel.
They have the same slope and same y-intercept; therefore, they intersect at one point.
They have different slopes and different y-intercepts; therefore, there are infinite solutions.
7When you solve a system of equations, what are you trying to figure out? No work is needed.
(1 Point)
the slope of the lines
the point of intersection of the lines
the y-intercepts of the lines
the distance between the lines
8How many solutions can you have to a system of equations? Choose ALL correct answers. No work is needed.
(1 Point)
one solution
no solution
infinite solutions
two solutions
9Which system of equations is represented in the graph? No work is needed.
(1 Point)
10Use elimination to solve the system of equations. Work must be submitted to earn full credit.
4x + 2y = 14
3x - 5y = -22
(1 Point)
(5, 1)
(3, -4)
(1, 5)
(5, 2)
11Use elimination to solve the system of equations. Work must be submitted to earn full credit.
10x - 12y = 22
5x - 6y = 11
(1 Point)
infinite solutions
no solution
(0, 0)
(-2, 2)
12Which graph matches the system of equations? No work is needed.
(1 Point)
13Which graph matches the system of equations? No work is needed.
(1 Point)
14Which graph represents a system of equations with "no" solution? No work is needed.
(1 Point)
A
B
C
D
15Use elimination to solve the system of equations. Work must be submitted to earn full credit.
-8x + 2y = -16
4x - y = 10Immersive Reader
(1 Point)
no solution
(0, 4)
infinite solutions
(4, 0)
Answers: 2
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The survey of study habits and attitudes (ssha) is a psychological test that measures the motivation, attitude toward school, and study habits of students, scores range from 0 to 200. the mean score for u. s. college students is about 115, and the standard deviation is about 30. a teacher who suspects that older students have better attitudes toward school gives the ssha to 55 students who are at least 30 years of age. the mean score is 113.2. assume the population standard deviation is 30 for older students what is the margin of error for a 95% confidence interval for the population mean score for a. older students? b. compute the 95% confidence interval for the population mean score for older students. c. compute the 99% confidence interval for the population mean score for older students. d. compute the 88% confidence interval for the population mean score for older students.
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PLEASE HELP URGENT Use elimination to solve the system of equations. Work must be submitted to earn...
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