Firstly let’s assume she is correct and use an equal sign:
1/2(12x + 24) = 3(2x + 4)
Now simplify both sides:
1/2 • 12x = 6x
1/2 • 24 = 12
6x + 12
3 • 2x = 6x
3 • 4 = 12
6x + 12
And:
6x + 12 = 6x + 12
Therefore they are equivalent, she is correct.
Answer:
<h2>x = 2, y = 3 → (2, 3)</h2>
Step-by-step explanation:

Answer:
B
Step-by-step explanation:
A is 3-2 which is 1, not 5.
C is 3(2), which is 6, not 5.
D is 6, which is not 5.
-hope it helps
Answer:
b)
Step-by-step explanation:
the HCF of 8 and 12 is 4 and then you take the smallest number of x, y and z's
they both have 1 x, the first one only has one y and they both have z^2
Answer:
-20.1 degrees Celsius
Step-by-step explanation:
The system started at -12.6 Celsius. It then cooled 7.5 degrees during a reaction. Because it cooled, that means the difference is negative.
-12.6 degrees Celsius - 7.5 degrees Celsius = -20.1 degrees Celsius
It is important to always remember your correct names and variables for numbers in chemistry!