You eat 80% of your daily calories at breakfast. Does this statement make sense?
2 answers:
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Answer:
- g(x) = x + 3
Step-by-step explanation:
<h3>Given</h3>- h(x) = (f ο g)(x)
- h(x) =
- f(x) =
- g(x)
<u>We know that:</u>
- (f ο g)(x) = f(g(x))
<u>Substitute x with g(x) and solve for g(x):</u>
=
- x + 5 = g(x) + 2
- x + 3 = g(x)
- g(x) = x + 3
9514 1404 393
Answer:
A. 3×3
B. [0, 1, 5]
C. (rows, columns) = (# equations, # variables) for matrix A; vector x remains unchanged; vector b has a row for each equation.
Step-by-step explanation:
A. The matrix A has a row for each equation and a column for each variable. The entries in each column of a given row are the coefficients of the corresponding variable in the equation the row represents. If the variable is missing, its coefficient is zero.
This system of equations has 3 equations in 3 variables, so matrix A has dimensions ...
A dimensions = (rows, columns) = (# equations, # variables) = (3, 3)
Matrix A is 3×3.
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B. The second row of A represents the second equation:
The coefficients of the variables are 0, 1, 5. These are the entries in row 2 of matrix A.
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C. As stated in part A, the size of matrix A will match the number of equations and variables in the system. If the number of variables remains the same, the number of rows of A (and b) will reflect the number of equations. (The number of columns of A (and rows of x) will reflect the number of variables.)