Answer:
14 cm
Step-by-step explanation:
If the rectangle is 15 cm wide then the total width is 30.
So we can subtract 30 from 70,
=40
If the length is increased by 2 then there is 4 more cm added to the total length.
We can do, 40-4
=38
If 38 is the total length we do 38 ÷ 2
=14
<em>Thus,</em>
<em>The original length was 14 cm.</em>
18cm
We can set up an equation to solve this
Let's start by naming the original length before the increase x.
New length is x+2.
Formula for perimeter of a rectangle is 2L+2W=P
Plug known values in
2(x+2)+2(15)=70
Simplify
2x+4+30=70
2x+34=70
2x=36
x=18
The original length is 18cm.
23 thousandths. <em><u>=</u></em><em><u> </u></em> 23 ÷ 10^3
9+4 × (6÷3) <em><u>></u></em> (9+4×6) ÷ 3
5 tens + 2 hundredths. <em><u><</u></em> 50.20
810.6 ÷ 10. <em><u>=</u></em> 8.106 × 10
d
$9257.5
plug into the equation known variables
