The third one is the answer but i may be wrong
Answer: Candace ate
servings.
Step-by-step explanation:
Given: Candace ate
cup of cereal.
The box of cereal states that 1 serving of cereal =
cup.
i.e. 1 cup =
servings [Multiply
both sides]
⇒
cup =
servings
=
servings [which is the number of servings she ate]
Hence, Candace ate
servings.
Answer: a11 = 3, a12 = 7, a21 = 1, a22 = -4
<u>Explanation:</u>
3x + 7y = 20
x - 4y = 9
A = ![\left[\begin{array}{ccc}3&7&20\\1&-4&9\end{array}\right]](https://tex.z-dn.net/?f=%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D3%267%2620%5C%5C1%26-4%269%5Cend%7Barray%7D%5Cright%5D)
<u>column 1 </u> <u>column 2</u>
row 1: (a11) 3 (a12) 7
row 2: (a21) 1 (a22) -4
I believe it is 1:6.
I hoped this helped :)