First we need to convert the mixed umber to an improper fraction...
3 2/9
Multiply the denominator by the whole number the. add the numerator the. put that over the original denominator.
9×3 = 27 + 2 = 29/9
now we can multiply the two fractions... numerator × numerator and denominator × denominator.
29/9 × 7/3 = 203/27
reduce the fraction to 7 14/27
Yes 4.47 is a rational number
Answer:
Im gonna guess 6
Step-by-step explanation:
Answer:
$6,000 or 30% more is paid for financing
Step-by-step explanation:
The total of payments when the car is financed is ...
10%×$20,000 +24×$1000 = $2,000 +24,000 = $26,000
The difference from the cash price is ...
$26,000 -20,000 = $6,000
The percentage this difference is of the cash price is ...
$6,000/$20,000 × 100% = 30%
By Cramer's rule, the solution can be found as the ratio of determinants. The numerator is the matrix with the right-side constants replacing the coefficients of the variable of interest. The denominator is the matrix of coefficients.
![x=\displaystyle\frac{det\left[\begin{array}{cc}-26&-6\\13&2\end{array}\right]}{det\left[\begin{array}{cc}-2&-6\\5&2\end{array}\right]}=\frac{(-26)(2)-(13)(-6)}{(-2)(2)-(5)(-6)}\\\\=\frac{26}{26}=1\\\\y=\frac{det\left[\begin{array}{cc}-2&-26\\5&13\end{array}\right]}{26}=\frac{(-2)(13)-(5)(-26)}{26}\\\\=\frac{104}{26}=4](https://tex.z-dn.net/?f=%20x%3D%5Cdisplaystyle%5Cfrac%7Bdet%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D-26%26-6%5C%5C13%262%5Cend%7Barray%7D%5Cright%5D%7D%7Bdet%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D-2%26-6%5C%5C5%262%5Cend%7Barray%7D%5Cright%5D%7D%3D%5Cfrac%7B%28-26%29%282%29-%2813%29%28-6%29%7D%7B%28-2%29%282%29-%285%29%28-6%29%7D%5C%5C%5C%5C%3D%5Cfrac%7B26%7D%7B26%7D%3D1%5C%5C%5C%5Cy%3D%5Cfrac%7Bdet%5Cleft%5B%5Cbegin%7Barray%7D%7Bcc%7D-2%26-26%5C%5C5%2613%5Cend%7Barray%7D%5Cright%5D%7D%7B26%7D%3D%5Cfrac%7B%28-2%29%2813%29-%285%29%28-26%29%7D%7B26%7D%5C%5C%5C%5C%3D%5Cfrac%7B104%7D%7B26%7D%3D4%20)
The solution is ...
... B. (1, 4)