Answer:
The lenght of the first piece is 6 feet.
The lenght of the second piece is 18 feet.
The lenght of the third piece is 30 feet.
Step-by-step explanation:
Let be:
the lenght of the first piece (in feet).
the lenght of the second piece (in feet).
the lenght of the third piece (in feet).
You know that the total lenght of the piece of siding is 54 feet. This means that:
Having this expression, you can solve for "x":
Therefore, the lenght of the first piece is 6 feet.
Then:
(The lenght of the second piece is 18 feet)
(The lenght of the third piece is 30 feet)
Answer:
19845
Step-by-step explanation:
Answer:
x = 5
Step-by-step explanation:
I'm assuming the question is asking to solve for variable x.
The two red arrows signify the two lines are congruent, meaning they equal the same measurement.
In other words:
23x - 5 = 21x + 5
Isolate the variable x
Add 5 to both sides to cancel 5 from the left side
23x - 5 + 5 = 21x + 5 + 5
23x + 0 = 21x + 10
23x = 21x + 10
Subtract 21x from both sides to cancel 21x from the right side
23x - 21x = 21x - 21x + 10
2x = 0x + 10
2x = 10
Divide both sides by 2 to isolate the variable x
2x ÷ 2 = 10 ÷ 2
x = 5
When solving for these types of problems, always isolate the variable. Also, keep in mind that whatever you do to one side, you must do to the other (such as how I added 5 to <em>both</em> sides).
Answer:
Step-by-step explanation:
0.092
Answer:
253.5
Step-by-step explanation:
The formula for the surface area of a cube is
A=6a²
fill it in to get
A=6(6.5)²
6.5² is 42.25
so your equation should look like this
A=6(42.45)
multiply 6 by 42.25 and you get 253.5 which is the answer
Hope this helps!
