Answer:
t = total money spent
t = $2.99g + $3.25c
for b just plug in g and c
$2.99(7.9) + $3.25(4)
if you put it into a calculator you get that he spent a total amount of $36.62 for the 7.9 gallons of gas and the 4 cans of oil. (:
Make fraction and multiply by 100% 42/150 * 100% = 4200/150% = 28%28% people wear contact lenses
C=
![\left[\begin{array}{ccc}-5&26&\\9&-60\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-5%2626%26%5C%5C9%26-60%5Cend%7Barray%7D%5Cright%5D%20)
Find the determinant;
9*1- 2*4= 1
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Inverse of the matrix;
1(</span>
![\left[\begin{array}{ccc}1&-4\\-2&9\end{array}\right]](https://tex.z-dn.net/?f=%20%20%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D1%26-4%5C%5C-2%269%5Cend%7Barray%7D%5Cright%5D%20)
Pre-multiplying the matrix by the inverse on both the left hand side and the right hand side gives the answer above.
Answer:
yet
Step-by-step explanation:
yet
90/15=6x4=24 Riley would on average score 24 points.