Evaluate each expression, using the values x = 13
and y = 7

X + y

X - y

Xy

2x + y

X + 2y

2x + 2y

4x - 3y

X + y - x- y

7x - 13y

Which statement is always true? a negative exponent cannot be part of an expression's numerator. a negative base raised to the power of 2 has a negative value. a negative base raised to the power of 2 has a positive value. any number to the first power is zero.

In triangles abc and wxy, a=w and b=x which of the following must be true to prove abc=wxy by the aas theorem? a.ab=bc b.bc=xy c.ab=wx d.

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?