Answer:
B. 
Step-by-step explanation:
Simplify the expression. Remember to go by the order of operations, or PEMDAS.
1) First, distribute the numbers outside of the set of parentheses to the terms inside the set of parentheses next to them. Then, simplify the fractions.
2) Finally, combine like terms. (This means to add or subtract constants and to add or subtract terms with the same variables.) You may need to convert terms to the same denominator in order to do so easier. Then, reduce the fraction.
Thus, the answer is .
Answer:
B and D
Step-by-step explanation:
Answer:50%
Step-by-step explanation: It doesn't matter how many questions there are because for each question, you have a 50% chance of getting it right. So, the probability is 50%.
Answer:
220 automóviles
Step-by-step explanation:
Aquí, queremos saber la cantidad de autos que ingresarán al garaje cuando esté completamente ocupado.
De la pregunta, nos dicen que hay 3 pisos. Para el 1er piso, hay 5 filas de 20 lugares.
El número total de autos que pueden estar en esto será 5 * 20 = 100 autos.
Para el segundo y tercer piso, tenemos 4 filas de 15 cada una.
El número total de autos aquí será 2 (15 * 4) = 2 * 60 = 120 autos
El número total de automóviles cuando está completamente ocupado es, por tanto, = 100 + 120 = 220 automóviles
