Answer:
A = 18 cm²
Step-by-step explanation:
The volume (V) of a prism is calculated as
V = area of base (A) × height
Here V = 216 cm³ and h = 12 cm , then
A × 12 = 216 ( divide both sides by 12 )
A = 18 cm² ← area of base
The equation is already set up for you. All you need to do is solve for x, the number of hours.
23 + 3x = 5x + 7 original equation
23 - 7 = 5x - 3x combine like terms by subtracting 7 and 3x from both sides
16 = 2x simplify
16/2 = x divide both sides by 2 to isolate x
8 = x solve for x
Therefore, the answer is 8 hrs.
Three hundred thirty seven thousand, one hundred seventy three
Lets say that you have 4-2=? you can use a bar model....
{the stars are the bars}
you have 4 total and now you need to subtract 2
****
{ i just took away 2 and then you count the bars but in this model count the stars}
**
Hope this helps!!!
