Algebra 2
posted by mysterychicken .
Is it me or does this problem not make sense? (you can't solve it)
5. Solve for x in the following system:
6x + 6y = 2
y = x
I also need help in these:
38. We can take the product AB only if the number of columns of A equals the number of rows of B. True?
40. The graph of the following system yields perpendicular lines:
x + 2y = 10
4y = 2x + 20
True or False?
42. If we multiply a 2 x 2 matrix with a 2 x 1 matrix, the product is a 2 x 1 matrix.
False?
Thanks
MC

There is no solution, the lines are parallel.
38. true
40. put each in slope intercept form:
y=x/2 5
y=x/2 5
false, it is the same line. 
Wait, so 42 IS false?
MC
Respond to this Question
Similar Questions

Geometry :(
this maths problem is wrecking my head.... 1.find the points of interesction of the line L and the circle k in the following L:x2y=0 K:X Squared + y squared=25 I would solve both equations for y, and then you'll have a system with … 
math
the sum of a number and 3 times that number is 76. what is that number? 
Algebra 2
I need help with this problem because I do not have a graphing calculator. Explain how you would solve this equation using your graphing calculator in five steps then give the solution. 2x 3y=8 5x+ 4y= 11 Also how do you determine … 
algebra
i need help with these problems (either a solution or how to plug them into a graphing calculator): 1) Solve by substitution or elimination 4/x + 1/y + 2/z = 4 2/x + 3/y  1/z = 1 1/x + 1/y + 1/z = 4 2)Solve the system of equations … 
Algebra II
Right now we're doing systems of Linear Equations in Three Variables. It says to solve the following system: x  y + 3z = 4 x + 2y  z = 3 4x + 3y + 2z = 5 Whatever I try with this problem (and the others like it) it comes out wrong. … 
Algebra
I need help I don't know how to solve this system Solve the following system. Show all your work 3x2y+2z= 30 x+3y4z= 33 2x4y+3z= 42 
Algebra, help needed
I need help I don't know how to solve this system Solve the following system. Show all your work 3x2y+2z= 30 x+3y4z= 33 2x4y+3z= 42 
Algebra
I need help on this following problem: The length of a rectangle measures 1 cm less than its width. The perimeter of the rectangle is 106 cm. Find the dimensions of the rectangle. Now i have tried to solve this problem in multiple … 
Algebra 2
I need step by step on how to solve this problem plz help I've been trying to figure it out for like an hour. Solve the system using the elimination method. 4xy+2z=18 x+2y+z=11 3x+3y4z=44 
Algebra 2 (Math)
Solve by the system of equations by substitution. x + 2y + z = 14 y = z + 1 x = 3z + 6 Anyone able to help me with this?