Find the error and compute the correct answer 5+4 • 3 =9 • 3 =27 pls explain answer

Hello from MrBillDoesMath!

17

Discussion:

The order of operations has multiplication coming before addition. so the proper interpretation of  5 + 4*3 is:

5 + 4*3 = 5 + (4*3) = 5 + 12 = 17

The Question incorrectly applies  the addition operation before multiplication and interprets 5+ 4*3  as:

5+ 4*3 = (5+4)*3 = 9*3 = 27.

Thank you,

MrB

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.