Write the phrase as a mathematical expression. Use x as the variable.The difference of some number and 7.9

A. 7.9x
B. x + 7.9
C. x - 7.9
D. 7.9


Answer: C

Mathematics

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Factor the trinomials that are perfect-square trinomials. If it is not a perfect square, respond "not a perfect square."16x2 + 24x + 9

A. (4x + 3)(4x - 3) B. not a perfect square C. (4x - 3)2 D. (4x + 3)2

Mathematics

Establish the identity.csc2u - cos u sec u= cot2 u

What will be an ideal response?

Mathematics

Provide an appropriate response.A prime number has exactly  factor(s).

A. 3 B. 1 C. 0 D. 2

Mathematics

Solve the system of linear equations and check any solution algebraically.


What will be an ideal response?

Mathematics