Evaluate each expression.
3√9 ∙ 3√3

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.

The total number of dental clinics total for the last 12 months was recorded

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14