Question

calculate the answer and round to the correct number of sig figs. 7 / 8.3 = 0.013 191.1 35 0.8

Explanation:

Step1: Realizar la división

Calculamos \( \frac{7}{8.3} \approx 0.843373 \)

Step2: Determinar el número de cifras significativas

El número 7 tiene 1 cifra significativa y 8.3 tiene 2 cifras significativas. En divisiones, el resultado se redondea al menor número de cifras significativas, que es 1 en este caso? No, espera, 7 es un número entero, si se considera que 7 tiene 1 cifra significativa y 8.3 tiene 2, pero quizás 7 se considera como tener 1 cifra, pero a veces, si es un número exacto (como 7.0), pero aquí es 7. Entonces, la regla es que en operaciones de división, el número de cifras significativas del resultado es igual al número de cifras significativas del número con menor cifras significativas. 7 tiene 1 cifra significativa, 8.3 tiene 2. Pero quizás el problema considera que 7 es un número con 1 cifra y 8.3 con 2, pero al dividir, el resultado debe tener 1 cifra significativa? No, wait, maybe I made a mistake. Wait, 7 is an integer, maybe it's considered as having 1 significant figure, and 8.3 has 2. But when we divide, the result should be rounded to 1 significant figure? But let's check the options. The options are 0.013, 191.1, 35, 0.8. Wait, maybe 7 is considered as having 1 significant figure and 8.3 as 2, but the correct way is that when dividing, the number of significant figures is determined by the least number, which is 1 (from 7). But \( 7 \div 8.3 \approx 0.843 \), and if we round to 1 significant figure, it's 0.8 (because 0.8 has 1 significant figure? Wait, no, 0.8 has 1 significant figure? Wait, 0.8 is one significant figure? Wait, no, 0.8 has one significant figure? Wait, 0.8: the leading zero is not significant, the 8 is significant, so one significant figure. Wait, but 7 has one significant figure, 8.3 has two. So the result should have one significant figure. So \( 7 \div 8.3 \approx 0.843 \), rounded to one significant figure is 0.8.

Answer:

0.8