Question

@campbell_st can you help me with this one as well.
The length of a rectangle is 4 cm less than the second less than three times the width. The perimeter is 64 cm. Find the width, length and equation. (Hint: Perimeter=21+2w)

Answer 1

sorry the dimensions don't make a lot of sense.

but start by letting the width = x

and then find the length...

then apply the formula.

Answer 2

length= 3w-4

Answer 3

the perimeter is 64 cm

Answer 4

ok... so then

64 = 2w + 2(3w -4)

solve for w, but distribute 1st

Answer 5

w= 9

Answer 6

yes, that makes sense

64 = 2(9) + 2(27 - 4)

64 = 18 + 46

Answer 7

thank you :)