A rectangle is 15cm wide, and its length was increased by 2cm, if its new perimeter is 70cm. what is its original length? pls solve

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

Thus,

The original length was 14 cm.

18cm

Step-by-step explanation:

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.

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!

don't report but were is the digram

step-by-step explanation: