Multiply matrices, simplify matrix expressions and solve A + X = B
Grade 11 Math Worksheet - Challenge Me
Circle the best answer, or write your answer on the line.
Row 1: 2, -8; row 2: 10, -4. Luz's matrix puzzle says -2X = B. What is the entry in row 2, column 1 of X?
Row 1: -7, -8; row 2: 5, 6. Matrix B: row 1: 3, -2; row 2: 15, 14. Milo needs X, where 2X + A = B. What is the entry in row 2, column 2 of X?
Row 1: 3, -7; row 2: -6, 4. Matrix B: row 1: -12, 8; row 2: 6, 13. For 3X + A = B, what is the entry in row 1, column 1 of X, the matrix Noah wants?
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Matrix A
Row 1: -3, 2; row 2: -2, 4. Matrix B: row 1: 3, 5; row 2: 4, 2. Matrix C: row 1: -3, 3; row 2: -6, -1.
Pia simplifies AB + C. What is the entry in row 1, column 2?
Matrix A
Row 1: 1, -1; row 2: 4, 4. Matrix B: row 1: -3, 5; row 2: -2, -4. Matrix C: row 1: 6, -3; row 2: -2, -2.
What is the entry in row 2, column 1 of AB − C, which Ren is finding?
Matrix A
Row 1: 2, -2; row 2: 4, 2. Matrix B: row 1: 5, -1; row 2: 1, 5. Matrix C: row 1: 4, -1; row 2: 4, -5.
Tala works out A(B + C) for the matrices shown. What is its entry in row 2, column 2?
Matrix A
Row 1: 4, -4; row 2: 1, -4. Matrix B: row 1: 3, -2; row 2: 4, -4. Matrix C: row 1: 6, 2; row 2: -5, 4.
Zee needs one entry of A(B − C). What is the entry in row 1, column 1?
Matrix Q (rows Friday, Saturday; columns muffins, milks)
Row 1: 30, 38; row 2: 45, 48. Matrix P (rows muffins, milks; columns price, cost to make, in dollars): row 1: $1.25, $0.50; row 2: $0.75, $0.30.
An adult runs the snack table. Matrix Q counts snacks sold, and matrix P gives each snack's price and cost to make. Bo finds QP. What did Friday's snacks cost to make, in dollars?
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Matrix Q (rows first game, second game; columns popcorn bags, lemonades): row 1: 60, 58; row 2: 55, 45. Matrix P (rows popcorn bags, lemonades; columns price, cost to make, in dollars): row 1: $2, $0.75; row 2: $1.50, $0.50.
An adult runs the snack table. Matrix Q counts snacks sold, and matrix P gives each snack's price and cost to make. Esme finds QP. What were the first game's sales in dollars?
Matrix Q (rows Monday, Tuesday; columns apples, waters)
Row 1: 44, 29; row 2: 13, 29. Matrix P (rows apples, waters; columns price, cost to make, in dollars): row 1: $0.50, $0.20; row 2: $1, $0.25.
An adult runs the snack table. Matrix Q counts snacks sold, and matrix P gives each snack's price and cost to make. Jun finds QP. What did Tuesday's snacks cost to make, in dollars?