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A competent knowledge of the pragmatics and register differences in your L2 is known as what?

Which of the following is true about Locke’s idea of Social Contract ?

According to Krashen’s [answer1] Hypothesis, acquired language knowledge is used to produce language while learned language knowledge is used to polish it and make sure it is correct. This only occurs with sufficient time and effort.

Naturalistic language learning occurs when people learn a second language without any formal instruction. 

Expand and simplify (x – 8) (x – 7)

The second differences for the function y = – 5×2 – 3x are all the same (constant).

The graph below models the path of a basketball after it was thrown from a player’s hands to the basketball hoop, through the net, and down to the floor. The h values represent the height of the ball in feet above the floor and the d values represent the horizontal distance in feet from the player’s hands.   What was the height of the ball, when it was first released from the player’s hands?  Accuracy to the nearest tenth.  Don’t forget your units! The height of the ball at initial release is 

The length of the indicated side to one decimal place is:

Algebraically determine the zero(s) of the quadratic relation y = x2 – 25.  Please list as coordinates. The coordinate(s) of the zero(s) is / are:

All autoimmune diseases are caused strictly by environmental factors, such as viral infections.