1000+9 x 100 + 9 x 10 + 3 x 1 or 1000 + 900+ 90 + 3
<span>x(1^2)-2(1)+4(1^3)=6
x - 2 + 4 = 6
x + 2 = 6
x = 4 </span>
Answer:
Part A)

Part B)

Step-by-step explanation:
We know that the rectangle has a length of (x+5) and a width of 12 cm.
Part A)
Remember the formula for the perimeter of a rectangle:

We know that the perimeter is 86. Substitute that for P:

Substitute (x+5) for the length l and 17 for w. So:

We can simplify this to acquire our equation:

Part B)
To find the length, let's find our x first. We have the equation:

Divide both sides by 2:

Now, subtract 22 from both sides. Therefore, our x is:

To find the length, remember that the length is:

Since we now know the value of x, substitute 21 for x:

Add:

So, the length is 26 centimeters.
And we're done!
Answer:
Area = 6 units x 5 units = 30 units^2
Step-by-step explanation: