Determine the values of the variable for which the expression is defined as a real number. (Enter your answer using interval notation.) x2 - 4

Q: The desks at Ryder Middle School are shaped like a rectangle with an area of 2x- - 3x - 2 square…

A: Given,          The desks at Ryder Middle School are shaped like a rectangle with an area…

Q: expression 0.2x - 60 is equivalent to an expression in the form k (x + A). Write the expression in…

A: The expression 0.2 x-60 is equivalent to an expression in the form k(x+A).

Q: Fill in the blank. (Enter your answer in terms of t.) |-1{20} = Need Help? Read It

A: Step 1: Step 2: Step 3: Step 4:

Q: For which values of x is x²+x+12?

A:

Q: Pick the expression (X+4). Follow steps below and write your result in your introductory post. Show…

A: Add 4:  (x+4)+4=x+4+4=x+8 Multiply by 6: 6(x+8)= 6x+48 Subtract 12: 6x+48-12=6x+36

Q: Write the property of multiplication for each.  -12 x 1 = - 12 -5 x (9x7) = (-5x9) x 7

A:

Q: Evaluate the expression when X = - 5. 2 X + 6x - 9

A: The expression is given by x2+6x-9 To evaluate: The value of the expression when x=-5.

Q: 7/(2+7x2) what is concave up and what is concave down.(Type an exact answer in simplified form.…

A: Put f``(x)=0 and find values of x

Q: 2x + 6 3x - 5 Write an expression that represents the length of the midsegment.

A: The objective of this question is to find an expression that represents the length of the midsegment…

Q: domain lor all variables in the expressions below is the set of real numbers. Determine whether each…

A: the statement says that for all x there exists y such that x+y≥0 let x = -2, y =5 then x+y≥0 let…