4 years ago

The cooks at Lakeview Middle School

Mathematics

1 answer:

boyakko [2]4 years ago

7 0

Answer:

18 cups of sugar

Step-by-step explanation:

If it is 2 cups of sugar for 3 cups of flour then to get to 27 from 3 you would multiply 3 by 9 to get 27 and do the same to the sugar. 2 times 9 equals 18

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Which of the following ordered pairs represents the solution to the system given below? 2x + y = 20 4x − 2y = 40 A) (10,0) B) (0

shtirl [24]

$2x+y=20 \ \ \ |\times 2 \\
4x-2y=40 \\ \\
4x+2y=40 \\
\underline{4x-2y=40} \\
4x+4x=40+40 \\
8x=80 \ \ \ |\div 8 \\
x=10 \\ \\
2x+y=20 \\
2 \times 10+y=20 \\
20+y=20 \ \ \ |-20 \\
y=0 \\ \\
\boxed{(x,y)=(10,0)} \Leftarrow \hbox{answer A}$