Given the matrix A and an echelon form of A. Find the dimension of Nul A. 3 -5 -1 3 -7 9 -4 9 -11 A = -5 7 -2 -7 3 -7 -3 4 [1 0 2.5 -4.5 3.5] 0 1 1.5 -2.5 1.5 0 0 lo o O a. 3 O b. 4 Ос. 5 O d. 1 O e. 0 O f. 2 ||

Q: Explain how you could test whether or not the point (5, 3) falls on the line represented by the…

A: Equation of the line is y=-4x+23 and the point is 5, 3. Now put x=5  &  y=3 in y=-4x+23, we get…

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Q: Find the value of x when y=-22. y= 5x - 7 %3D

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Q: Find the value of y when x = 7. ア=ー4r %3D

A: Given by Y= -4x when x = 7 Hence, Y= -4(7) Y= -28

Q: Please get the factored form, minimum, and the decreasing interval

A: Given that :f(x)=-x3+x2+12x

Q: from 1990 to 2015 there was a decrease in the number of stores in texas by 23 stores per year. in…

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Q: If 2x3+3ycos(xy)+(cx2y2+3xcos(xy))y'=0 is the exact differential equation then c =?

A: The exact differential equation is defined as the differential equation of the form Mx,ydx+Nx,ydy=0,…

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Q: In the first step of the substitution method, how do I know which variable to isolate and in which…

A: In substitution method, isolate the variable that do not have a coefficient in any one of the given…

Q: y= 2+ x 2. トリ

A: We have to find domain and range

Q: Cameron is planning a design on a square shaped board. The perimeter of the board is 44 inches, and…

A: Cameron is planning a design on a square shaped board. The perimeter of the board is 44 inches and…

Q: A number decreased by 15 is the same as thirty percent of the number increased by 5 which equation…

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Q: Question 3 Let An,k be the number of partitions P of the set {1, 2, ...n + 1} such that {k+ 1} € P…

A: Solution for question 1: Using the definition of An,k, A1,1 is the number of partitions P of the set…

Q: 3. (5.7.12) On June 2, 2010 USA Today reported a story from Bloomberg News that said that the total…

A: Note that : Since you have posted multiple questions, we will provide the solution only to the first…

Q: Determine by a matrix method the equation of the line of regression for Y on X1 and  X2.  Use your…

A: Given Data : YY X1X_1​ X2X_2​ 11 -5 5 11 -4 4 8 -1 1 2 2 -3 Following is the Matrix…

Q: how do you calculate the t-value from the table. I'm confused

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A: To solve the linear inequality

Q: Write the equation of the line with slope 2/3 that passes through the point    (- 6, 4).

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Q: 5x-y=1 y=5x-1

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Q: When looking at a multi-step equation, how do you know WHEN you should Move Variables?

A: When variable on both side of equation then we move variables accordingly.

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Q: A farmer finds that if she plants 70 trees per acre, each tree will yield 35 bushels of fruit. She…

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.