Answer:
The required division problem he must solve is:
![(2)/(3) / (-3)/(8) =(2)/(3)*(-8)/(3)=(-16)/(9)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uqhz7s4lzz0h5xbk29iuqw8d5yfofx21dd.png)
Explanation:
Consider the provided information.
Martin chose two of the cards below. When he found the quotient of the numbers, his answer was -16/9.
As we know that the quotient of the number is a negative number.
Therefore, the sign of both numbers must be different,
Thus we can concluded he must select
as one of the card, so that product is a negative number.
Let the selected card be x.
![(2)/(3) / x =(-16)/(9)\\\\x=(2)/(3)/(-16)/(9)\\\\x=(2)/(3)*(-9)/(16)\\\\x=(-3)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/x5tt3b4xbsvs88yhv5h9zuuo6uu398g2vl.png)
Hence, the two cards should be
and
![(-3)/(8)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/dnihlw06xvz57kp8uovhkoxmdobm0982n2.png)
The required division problem he must solve is:
![(2)/(3) / (-3)/(8) =(2)/(3)*(-8)/(3)=(-16)/(9)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/uqhz7s4lzz0h5xbk29iuqw8d5yfofx21dd.png)