Answer:
![X = \begin{bmatrix} - 4 & 1 \\ - 2 & - 7\end{bmatrix}](https://tex.z-dn.net/?f=%20%20X%20%3D%20%3C%2Fp%3E%3Cp%3E%5Cbegin%7Bbmatrix%7D%20-%204%20%26%201%20%5C%5C%20-%202%20%26%20-%207%5Cend%7Bbmatrix%7D)
Step-by-step explanation:
![\begin{bmatrix} - 1 & - 2\\ 4 & 8\end{bmatrix} +X = \begin{bmatrix} - 5 & - 1\\ 2 & 1\end{bmatrix}](https://tex.z-dn.net/?f=%20%5Cbegin%7Bbmatrix%7D%20-%201%20%26%20-%202%5C%5C%204%20%26%208%5Cend%7Bbmatrix%7D%20%2BX%20%3D%20%5Cbegin%7Bbmatrix%7D%20-%205%20%26%20-%201%5C%5C%202%20%26%201%5Cend%7Bbmatrix%7D)
![X = \begin{bmatrix} - 5 & - 1\\ 2 & 1\end{bmatrix}-\begin{bmatrix} - 1 & - 2\\ 4 & 8\end{bmatrix}](https://tex.z-dn.net/?f=%20%20X%20%3D%20%3C%2Fp%3E%3Cp%3E%5Cbegin%7Bbmatrix%7D%20-%205%20%26%20-%201%5C%5C%202%20%26%201%5Cend%7Bbmatrix%7D-%5Cbegin%7Bbmatrix%7D%20-%201%20%26%20-%202%5C%5C%204%20%26%208%5Cend%7Bbmatrix%7D)
![X = \begin{bmatrix} - 5-(-1) & - 1-(-2)\\ 2-4 & 1-8\end{bmatrix}](https://tex.z-dn.net/?f=%20%20X%20%3D%20%3C%2Fp%3E%3Cp%3E%5Cbegin%7Bbmatrix%7D%20-%205-%28-1%29%20%26%20-%201-%28-2%29%5C%5C%202-4%20%26%201-8%5Cend%7Bbmatrix%7D)
![X = \begin{bmatrix} - 5+1 & - 1+2\\ 2-4 & 1-8\end{bmatrix}](https://tex.z-dn.net/?f=%20%20X%20%3D%20%3C%2Fp%3E%3Cp%3E%5Cbegin%7Bbmatrix%7D%20-%205%2B1%20%26%20-%201%2B2%5C%5C%202-4%20%26%201-8%5Cend%7Bbmatrix%7D)
![X = \begin{bmatrix} - 4 & 1 \\ - 2 & - 7\end{bmatrix}](https://tex.z-dn.net/?f=%20%20X%20%3D%20%3C%2Fp%3E%3Cp%3E%5Cbegin%7Bbmatrix%7D%20-%204%20%26%201%20%5C%5C%20-%202%20%26%20-%207%5Cend%7Bbmatrix%7D)
equation csn be represented as
money left = 500 - (n-1)×4.65
so we can see in first week money left
= 500 - (1-1)×4.65= 500-0=500
which is true because first week chaya got gift card and does not spend any money.
now lets assume that on week n money left is 327.95
so by equation
500 -(n-1)×4.65 = 327.95
500- 327.95 =( n-1)× 4.65
n -1 = 172.05/4.65=37
n = 37+1 = 38
in 38th week money left would be 327.95
She has a 1/6 chance of guessing the correct cereal that you picked up. Since there were six cereal options.
Answer:
Your answer should be D. 4^x4 + 2x^3 –2x + 4
Step-by-step explanation:
In this item, we are asked to split the numerical value which is 54 pounds such that the ratio of the numbers will be 5:4.
To answer, let 5x be the first number and 4x be the second number. With the given scenario, the equation that would best represent the given will be,
54 = 5x + 4x
The value of x is 6 giving us the values of 5x and 4x as 30 and 24, respectively.
Hence, the split will be 30 and 24.