Answer:
3
Step-by-step explanation:
Answer:
![76 ft^3](https://tex.z-dn.net/?f=76%20ft%5E3)
Step-by-step explanation:
First, split the figure into two different rectangular prisms. I found it easiest to split it like this (image attached below).
To find the volume of the lower prism, multiply the Length (6ft) x Width (2ft) x Height (3ft).
6 * 2 * 3 = 36 ![ft^3](https://tex.z-dn.net/?f=ft%5E3)
Next, subtract 3 from 8 to get the height of the top prism. 8 - 3 = 5, so the height of the top prism is 5.
Multiply the Length (4ft) x Width (2ft) x Height (5ft).
4 * 2 * 5 = 40 ft![^3](https://tex.z-dn.net/?f=%5E3)
Add the two volumes.
40 + 36 = 76 ft^3.
Final answer: ![76 ft^3](https://tex.z-dn.net/?f=76%20ft%5E3)
Hello,
Question:
Keisha solved the following equation:
4x − 2x + 8 = 6(x + 4)
Which step has an incorrect justification? (Make sure to type only the number of the step into the blank: 1, 2, 3, 4 or 5)
Correct Solution:
x − 2x + 8 = 6(x + 4)
4x + −2x + 8 = (6) (x) + (6) (4) (Distribute)
4x + −2x + 8 = 6x + 24
(4x + −2x) + (8) = 6x + 24 (Combine Like Terms)
2x + 8 = 6x + 24
2x + 8 = 6x + 24
Subtract 6x from both sides.
2x + 8 − 6x = 6x + 24 − 6x
−4x + 8 = 24
Subtract 8 from both sides.
−4x + 8 − 8 = 24 − 8
−4x = 16
-4 x -4 = 16
x = -4
Answer:
Where keisha went wrong was forgeting to subtract 6x to both sides.
Incorrrect step is #3
Answer:
27
Step-by-step explanation:
3x + 9 = 90
3x = 90 - 9
3x = 81
x =27