Solve the following systems of linear equations using Gaussian elimination

6x +7y = 7
5x - 7y = 70


(7, ? 5)

Mathematics

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Simplify the expression.

A. undefined B. tan(4x + ?) C. 0 D. tan(4x - ?)

Mathematics

Provide an appropriate response.Solve using a system of equations with two unknowns: Three T-shirts and two pairs of jeans cost $118. A T-shirt and three pairs of jeans cost $114. How much does a pair of jeans cost?

A. $18 B. $42 C. $58 D. $32

Mathematics

Convert using dimensional analysis.6 feet to inches

A. 24 in. B. 72 in. C. 216 in. D. 18 in.

Mathematics

Multiply.(2x - 10)(x + 3)

A. 2x2 - 6x - 30 B. 2x2 - 30x - 4 C. 2x2 - 4x - 30 D. 2x2 - 4x - 4

Mathematics