La suma de las edades de Carmen y Reina es de 59 años, calcula las edades de las 2 personas, si se sabe que Reina es 5 veces mayor que Carmen.

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Find the domain of the following expression: 1/(√x)-2