10 times 2.5 plus 13.5 equals

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.

Is triangle jkl congruent to triangle rst? if so, what is the scale factor?

The product of (7x-2) and (20-3x)/4. when x=4