Answer:
-1,-3,-9,-27,-81,-243...
Step-by-step explanation:
Since x is the length, then x+7 has to be the width.
The area of a rectangle can be found via the formula :
A = length * width
So if we replace the area with the given number (170) and the length, and width, with what we assumed, we get..
170 = x * (x+7)
[which is.. ]
170 = x^2 +7x
0 = x^2 +7x - 170
And that is the answer.
Me don’t understand it i need more info
Answer:
48 cm
Step-by-step explanation:
The perimeter of the figure is the sum of the lengths of its sides.
Find the length of the unknown side
Let the unknown length be x cm.
Notice that the sum of the lengths of the unknown side and the side measuring 5 cm I equal to the length of the side measuring 9 cm.
x +5= 9
<em>Subtracting 5 from both sides:</em>
x= 9 -5
x= 4
Add up the lengths of all of the sides to find the perimeter. I will add the lengths starting from the side measuring x cm (or 4 cm), and sum them up in a clockwise manner. This ensures that none of the sides are overlooked.
Perimeter of the figure
= 4 +15 +9 +7 +5 +8
= 48 cm
Additional:
For more about perimeter of figures, do check out the following!