Answer:
here's one way: z^x = Y, 7^1 = 7
Y = 7
Step-by-step explanation:
Turn 45% into a decimal. You get 0.45, because you move the decimal two places to the left.
Then multiply 300*0.45
You get 135
135 Shoppers in the supermarket bought milk.
The anwser is one and two tenths
Answer:
1968
Step-by-step explanation:
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![4x-8y=0 \\ \underline{-3x+8y=-7} \\ 4x-3x=0-7 \\ x=-7 \\ \\ 4x-8y=0 \\ 4 \times (-7)-8y=0 \\ -28-8y=0 \\ -8y=28 \\ y=\frac{28}{-8} \\ y=-\frac{7}{2} \\ \\ \left \{ {{x=-7} \atop {y=-\frac{7}{2}}} \right.](https://tex.z-dn.net/?f=4x-8y%3D0%20%5C%5C%0A%5Cunderline%7B-3x%2B8y%3D-7%7D%20%5C%5C%0A4x-3x%3D0-7%20%5C%5C%0Ax%3D-7%20%5C%5C%20%5C%5C%0A4x-8y%3D0%20%5C%5C%0A4%20%5Ctimes%20%28-7%29-8y%3D0%20%5C%5C%0A-28-8y%3D0%20%5C%5C%0A-8y%3D28%20%5C%5C%0Ay%3D%5Cfrac%7B28%7D%7B-8%7D%20%5C%5C%0Ay%3D-%5Cfrac%7B7%7D%7B2%7D%20%5C%5C%20%5C%5C%0A%20%5Cleft%20%5C%7B%20%7B%7Bx%3D-7%7D%20%5Catop%20%7By%3D-%5Cfrac%7B7%7D%7B2%7D%7D%7D%20%5Cright.%20)
There is one solution to this system of equations. The answer is B.