number 4 is in the picture i attached

and number 8 i typed out

the ratio of the length to the width of a rectangle is 4: 11. the rectangle's perimeter is 650 mm. what are the rectangles dimensions?

4

If two triangles are similar, corresponding sides are in proportion. So, we have

Multiply both sides by to get

Expand the left hand side:

Subtract 17.5y from both sides:

Divide both sides by 10.5:

8

Given the ratio

we can deduce

The perimeter of the rectangle is given by

Now we can deduce the value for x:

details

step-by-step explanation:

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!